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DrvHostAudioDSound.cpp

Last change on this file was 100142, checked in by vboxsync, 11 months ago
Audio/DrvHostAudioDSound: Return the correct pointer address in dsoundConfigQueryGUID(). Issue found by Parfait [committed too much].
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 107.4 KB

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1	/* $Id: DrvHostAudioDSound.cpp 100142 2023-06-09 15:28:11Z vboxsync $ */
2	/** @file
3	* Host audio driver - DirectSound (Windows).
4	*/
5
6	/*
7	* Copyright (C) 2006-2023 Oracle and/or its affiliates.
8	*
9	* This file is part of VirtualBox base platform packages, as
10	* available from https://www.virtualbox.org.
11	*
12	* This program is free software; you can redistribute it and/or
13	* modify it under the terms of the GNU General Public License
14	* as published by the Free Software Foundation, in version 3 of the
15	* License.
16	*
17	* This program is distributed in the hope that it will be useful, but
18	* WITHOUT ANY WARRANTY; without even the implied warranty of
19	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20	* General Public License for more details.
21	*
22	* You should have received a copy of the GNU General Public License
23	* along with this program; if not, see <https://www.gnu.org/licenses>.
24	*
25	* SPDX-License-Identifier: GPL-3.0-only
26	*/
27
28
29	/*********************************************************************************************************************************
30	* Header Files *
31	*********************************************************************************************************************************/
32	#define LOG_GROUP LOG_GROUP_DRV_HOST_AUDIO
33	#define INITGUID
34	#include <VBox/log.h>
35	#include <iprt/win/windows.h>
36	#include <dsound.h>
37	#include <mmdeviceapi.h>
38	#include <functiondiscoverykeys_devpkey.h>
39	#include <iprt/win/mmreg.h> /* WAVEFORMATEXTENSIBLE */
40
41	#include <iprt/alloc.h>
42	#include <iprt/system.h>
43	#include <iprt/uuid.h>
44	#include <iprt/utf16.h>
45
46	#include <VBox/vmm/pdmaudioinline.h>
47	#include <VBox/vmm/pdmaudiohostenuminline.h>
48
49	#include "VBoxDD.h"
50
51	#ifdef VBOX_WITH_AUDIO_MMNOTIFICATION_CLIENT
52	# include <new> /* For bad_alloc. */
53	# include "DrvHostAudioDSoundMMNotifClient.h"
54	#endif
55
56
57	/*********************************************************************************************************************************
58	* Defined Constants And Macros *
59	*********************************************************************************************************************************/
60	/*
61	* Optional release logging, which a user can turn on with the
62	* 'VBoxManage debugvm' command.
63	* Debug logging still uses the common Log* macros from VBox.
64	* Messages which always should go to the release log use LogRel.
65	*
66	* @deprecated Use LogRelMax, LogRel2 and LogRel3 directly.
67	*/
68	/** General code behavior. */
69	#define DSLOG(a) do { LogRel2(a); } while(0)
70	/** Something which produce a lot of logging during playback/recording. */
71	#define DSLOGF(a) do { LogRel3(a); } while(0)
72	/** Important messages like errors. Limited in the default release log to avoid log flood. */
73	#define DSLOGREL(a) \
74	do { \
75	static int8_t s_cLogged = 0; \
76	if (s_cLogged < 8) { \
77	++s_cLogged; \
78	LogRel(a); \
79	} else DSLOG(a); \
80	} while (0)
81
82	/** Maximum number of attempts to restore the sound buffer before giving up. */
83	#define DRV_DSOUND_RESTORE_ATTEMPTS_MAX 3
84	#if 0 /** @todo r=bird: What are these for? Nobody is using them... */
85	/** Default input latency (in ms). */
86	#define DRV_DSOUND_DEFAULT_LATENCY_MS_IN 50
87	/** Default output latency (in ms). */
88	#define DRV_DSOUND_DEFAULT_LATENCY_MS_OUT 50
89	#endif
90
91
92	/*********************************************************************************************************************************
93	* Structures and Typedefs *
94	*********************************************************************************************************************************/
95	/* Dynamically load dsound.dll. */
96	typedef HRESULT WINAPI FNDIRECTSOUNDENUMERATEW(LPDSENUMCALLBACKW pDSEnumCallback, PVOID pContext);
97	typedef FNDIRECTSOUNDENUMERATEW *PFNDIRECTSOUNDENUMERATEW;
98	typedef HRESULT WINAPI FNDIRECTSOUNDCAPTUREENUMERATEW(LPDSENUMCALLBACKW pDSEnumCallback, PVOID pContext);
99	typedef FNDIRECTSOUNDCAPTUREENUMERATEW *PFNDIRECTSOUNDCAPTUREENUMERATEW;
100	typedef HRESULT WINAPI FNDIRECTSOUNDCAPTURECREATE8(LPCGUID lpcGUID, LPDIRECTSOUNDCAPTURE8 *lplpDSC, LPUNKNOWN pUnkOuter);
101	typedef FNDIRECTSOUNDCAPTURECREATE8 *PFNDIRECTSOUNDCAPTURECREATE8;
102
103	#define VBOX_DSOUND_MAX_EVENTS 3
104
105	typedef enum DSOUNDEVENT
106	{
107	DSOUNDEVENT_NOTIFY = 0,
108	DSOUNDEVENT_INPUT,
109	DSOUNDEVENT_OUTPUT,
110	} DSOUNDEVENT;
111
112	typedef struct DSOUNDHOSTCFG
113	{
114	RTUUID uuidPlay;
115	LPCGUID pGuidPlay;
116	RTUUID uuidCapture;
117	LPCGUID pGuidCapture;
118	} DSOUNDHOSTCFG, *PDSOUNDHOSTCFG;
119
120	typedef struct DSOUNDSTREAM
121	{
122	/** Common part. */
123	PDMAUDIOBACKENDSTREAM Core;
124	/** Entry in DRVHOSTDSOUND::HeadStreams. */
125	RTLISTNODE ListEntry;
126	/** The stream's acquired configuration. */
127	PDMAUDIOSTREAMCFG Cfg;
128	/** Buffer alignment. */
129	uint8_t uAlign;
130	/** Whether this stream is in an enable state on the DirectSound side. */
131	bool fEnabled;
132	bool afPadding[2];
133	/** Size (in bytes) of the DirectSound buffer. */
134	DWORD cbBufSize;
135	union
136	{
137	struct
138	{
139	/** The actual DirectSound Buffer (DSB) used for the capturing.
140	* This is a secondary buffer and is used as a streaming buffer. */
141	LPDIRECTSOUNDCAPTUREBUFFER8 pDSCB;
142	/** Current read offset (in bytes) within the DSB. */
143	DWORD offReadPos;
144	/** Number of buffer overruns happened. Used for logging. */
145	uint8_t cOverruns;
146	} In;
147	struct
148	{
149	/** The actual DirectSound Buffer (DSB) used for playback.
150	* This is a secondary buffer and is used as a streaming buffer. */
151	LPDIRECTSOUNDBUFFER8 pDSB;
152	/** Current write offset (in bytes) within the DSB.
153	* @note This is needed as the current write position as kept by direct sound
154	* will move ahead if we're too late. */
155	DWORD offWritePos;
156	/** Offset of last play cursor within the DSB when checked for pending. */
157	DWORD offPlayCursorLastPending;
158	/** Offset of last play cursor within the DSB when last played. */
159	DWORD offPlayCursorLastPlayed;
160	/** Total amount (in bytes) written to our internal ring buffer. */
161	uint64_t cbWritten;
162	/** Total amount (in bytes) played (to the DirectSound buffer). */
163	uint64_t cbTransferred;
164	/** Flag indicating whether playback was just (re)started. */
165	bool fFirstTransfer;
166	/** Flag indicating whether this stream is in draining mode, e.g. no new
167	* data is being written to it but DirectSound still needs to be able to
168	* play its remaining (buffered) data. */
169	bool fDrain;
170	/** How much (in bytes) the last transfer from the internal buffer
171	* to the DirectSound buffer was. */
172	uint32_t cbLastTransferred;
173	/** The RTTimeMilliTS() deadline for the draining of this stream. */
174	uint64_t msDrainDeadline;
175	} Out;
176	};
177	/** Timestamp (in ms) of the last transfer from the internal buffer to/from the
178	* DirectSound buffer. */
179	uint64_t msLastTransfer;
180	/** The stream's critical section for synchronizing access. */
181	RTCRITSECT CritSect;
182	/** Used for formatting the current DSound status. */
183	char szStatus[127];
184	/** Fixed zero terminator. */
185	char const chStateZero;
186	} DSOUNDSTREAM, *PDSOUNDSTREAM;
187
188	/**
189	* DirectSound-specific device entry.
190	*/
191	typedef struct DSOUNDDEV
192	{
193	PDMAUDIOHOSTDEV Core;
194	/** The GUID if handy. */
195	GUID Guid;
196	/** The GUID as a string (empty if default). */
197	char szGuid[RTUUID_STR_LENGTH];
198	} DSOUNDDEV;
199	/** Pointer to a DirectSound device entry. */
200	typedef DSOUNDDEV *PDSOUNDDEV;
201
202	/**
203	* Structure for holding a device enumeration context.
204	*/
205	typedef struct DSOUNDENUMCBCTX
206	{
207	/** Enumeration flags. */
208	uint32_t fFlags;
209	/** Pointer to device list to populate. */
210	PPDMAUDIOHOSTENUM pDevEnm;
211	} DSOUNDENUMCBCTX, *PDSOUNDENUMCBCTX;
212
213	typedef struct DRVHOSTDSOUND
214	{
215	/** Pointer to the driver instance structure. */
216	PPDMDRVINS pDrvIns;
217	/** Our audio host audio interface. */
218	PDMIHOSTAUDIO IHostAudio;
219	/** Critical section to serialize access. */
220	RTCRITSECT CritSect;
221	/** DirectSound configuration options. */
222	DSOUNDHOSTCFG Cfg;
223	/** List of devices of last enumeration. */
224	PDMAUDIOHOSTENUM DeviceEnum;
225	/** Whether this backend supports any audio input.
226	* @todo r=bird: This is not actually used for anything. */
227	bool fEnabledIn;
228	/** Whether this backend supports any audio output.
229	* @todo r=bird: This is not actually used for anything. */
230	bool fEnabledOut;
231	/** The Direct Sound playback interface. */
232	LPDIRECTSOUND8 pDS;
233	/** The Direct Sound capturing interface. */
234	LPDIRECTSOUNDCAPTURE8 pDSC;
235	/** List of streams (DSOUNDSTREAM).
236	* Requires CritSect ownership. */
237	RTLISTANCHOR HeadStreams;
238
239	#ifdef VBOX_WITH_AUDIO_MMNOTIFICATION_CLIENT
240	DrvHostAudioDSoundMMNotifClient *m_pNotificationClient;
241	#endif
242	} DRVHOSTDSOUND, *PDRVHOSTDSOUND;
243
244
245	/*********************************************************************************************************************************
246	* Internal Functions *
247	*********************************************************************************************************************************/
248	static HRESULT directSoundPlayRestore(PDRVHOSTDSOUND pThis, LPDIRECTSOUNDBUFFER8 pDSB);
249	static int drvHostDSoundStreamStopPlayback(PDRVHOSTDSOUND pThis, PDSOUNDSTREAM pStreamDS, bool fReset);
250
251
252	#if defined(LOG_ENABLED) \|\| defined(RTLOG_REL_ENABLED)
253	/**
254	* Gets the stream status as a string for logging purposes.
255	*
256	* @returns Status string (pStreamDS->szStatus).
257	* @param pStreamDS The stream to get the status for.
258	*/
259	static const char *drvHostDSoundStreamStatusString(PDSOUNDSTREAM pStreamDS)
260	{
261	/*
262	* Out internal stream status first.
263	*/
264	size_t off;
265	if (pStreamDS->fEnabled)
266	{
267	memcpy(pStreamDS->szStatus, RT_STR_TUPLE("ENABLED "));
268	off = sizeof("ENABLED ") - 1;
269	}
270	else
271	{
272	memcpy(pStreamDS->szStatus, RT_STR_TUPLE("DISABLED"));
273	off = sizeof("DISABLED") - 1;
274	}
275
276	/*
277	* Direction specific stuff, returning with a status DWORD and string mappings for it.
278	*/
279	typedef struct DRVHOSTDSOUNDSFLAGS2STR
280	{
281	const char *pszMnemonic;
282	uint32_t cchMnemonic;
283	uint32_t fFlag;
284	} DRVHOSTDSOUNDSFLAGS2STR;
285	static const DRVHOSTDSOUNDSFLAGS2STR s_aCaptureFlags[] =
286	{
287	{ RT_STR_TUPLE(" CAPTURING"), DSCBSTATUS_CAPTURING },
288	{ RT_STR_TUPLE(" LOOPING"), DSCBSTATUS_LOOPING },
289	};
290	static const DRVHOSTDSOUNDSFLAGS2STR s_aPlaybackFlags[] =
291	{
292	{ RT_STR_TUPLE(" PLAYING"), DSBSTATUS_PLAYING },
293	{ RT_STR_TUPLE(" BUFFERLOST"), DSBSTATUS_BUFFERLOST },
294	{ RT_STR_TUPLE(" LOOPING"), DSBSTATUS_LOOPING },
295	{ RT_STR_TUPLE(" LOCHARDWARE"), DSBSTATUS_LOCHARDWARE },
296	{ RT_STR_TUPLE(" LOCSOFTWARE"), DSBSTATUS_LOCSOFTWARE },
297	{ RT_STR_TUPLE(" TERMINATED"), DSBSTATUS_TERMINATED },
298	};
299	DRVHOSTDSOUNDSFLAGS2STR const *paMappings = NULL;
300	size_t cMappings = 0;
301	DWORD fStatus = 0;
302	if (pStreamDS->Cfg.enmDir == PDMAUDIODIR_IN)
303	{
304	if (pStreamDS->In.pDSCB)
305	{
306	HRESULT hrc = pStreamDS->In.pDSCB->GetStatus(&fStatus);
307	if (SUCCEEDED(hrc))
308	{
309	paMappings = s_aCaptureFlags;
310	cMappings = RT_ELEMENTS(s_aCaptureFlags);
311	}
312	else
313	RTStrPrintf(&pStreamDS->szStatus[off], sizeof(pStreamDS->szStatus) - off, "GetStatus->%Rhrc", hrc);
314	}
315	else
316	RTStrCopy(&pStreamDS->szStatus[off], sizeof(pStreamDS->szStatus) - off, "NO-DSCB");
317	}
318	else if (pStreamDS->Cfg.enmDir == PDMAUDIODIR_OUT)
319	{
320	if (pStreamDS->Out.fDrain)
321	{
322	memcpy(&pStreamDS->szStatus[off], RT_STR_TUPLE(" DRAINING"));
323	off += sizeof(" DRAINING") - 1;
324	}
325
326	if (pStreamDS->Out.fFirstTransfer)
327	{
328	memcpy(&pStreamDS->szStatus[off], RT_STR_TUPLE(" NOXFER"));
329	off += sizeof(" NOXFER") - 1;
330	}
331
332	if (pStreamDS->Out.pDSB)
333	{
334	HRESULT hrc = pStreamDS->Out.pDSB->GetStatus(&fStatus);
335	if (SUCCEEDED(hrc))
336	{
337	paMappings = s_aPlaybackFlags;
338	cMappings = RT_ELEMENTS(s_aPlaybackFlags);
339	}
340	else
341	RTStrPrintf(&pStreamDS->szStatus[off], sizeof(pStreamDS->szStatus) - off, "GetStatus->%Rhrc", hrc);
342	}
343	else
344	RTStrCopy(&pStreamDS->szStatus[off], sizeof(pStreamDS->szStatus) - off, "NO-DSB");
345	}
346	else
347	RTStrCopy(&pStreamDS->szStatus[off], sizeof(pStreamDS->szStatus) - off, "BAD-DIR");
348
349	/* Format flags. */
350	if (paMappings)
351	{
352	if (fStatus == 0)
353	RTStrCopy(&pStreamDS->szStatus[off], sizeof(pStreamDS->szStatus) - off, " 0");
354	else
355	{
356	for (size_t i = 0; i < cMappings; i++)
357	if (fStatus & paMappings[i].fFlag)
358	{
359	memcpy(&pStreamDS->szStatus[off], paMappings[i].pszMnemonic, paMappings[i].cchMnemonic);
360	off += paMappings[i].cchMnemonic;
361
362	fStatus &= ~paMappings[i].fFlag;
363	if (!fStatus)
364	break;
365	}
366	if (fStatus != 0)
367	off += RTStrPrintf(&pStreamDS->szStatus[off], sizeof(pStreamDS->szStatus) - off, " %#x", fStatus);
368	}
369	}
370
371	/*
372	* Finally, terminate the string. By postponing it this long, it won't be
373	* a big deal if two threads go thru here at the same time as long as the
374	* status is the same.
375	*/
376	Assert(off < sizeof(pStreamDS->szStatus));
377	pStreamDS->szStatus[off] = '\0';
378
379	return pStreamDS->szStatus;
380	}
381	#endif /* LOG_ENABLED \|\| RTLOG_REL_ENABLED */
382
383
384	static DWORD dsoundRingDistance(DWORD offEnd, DWORD offBegin, DWORD cSize)
385	{
386	AssertReturn(offEnd <= cSize, 0);
387	AssertReturn(offBegin <= cSize, 0);
388
389	return offEnd >= offBegin ? offEnd - offBegin : cSize - offBegin + offEnd;
390	}
391
392
393	static char *dsoundGUIDToUtf8StrA(LPCGUID pGUID)
394	{
395	if (pGUID)
396	{
397	LPOLESTR lpOLEStr;
398	HRESULT hr = StringFromCLSID(*pGUID, &lpOLEStr);
399	if (SUCCEEDED(hr))
400	{
401	char *pszGUID;
402	int rc = RTUtf16ToUtf8(lpOLEStr, &pszGUID);
403	CoTaskMemFree(lpOLEStr);
404
405	return RT_SUCCESS(rc) ? pszGUID : NULL;
406	}
407	}
408
409	return RTStrDup("{Default device}");
410	}
411
412
413	static HRESULT directSoundPlayRestore(PDRVHOSTDSOUND pThis, LPDIRECTSOUNDBUFFER8 pDSB)
414	{
415	RT_NOREF(pThis);
416	HRESULT hr = IDirectSoundBuffer8_Restore(pDSB);
417	if (FAILED(hr))
418	DSLOG(("DSound: Restoring playback buffer\n"));
419	else
420	DSLOGREL(("DSound: Restoring playback buffer failed with %Rhrc\n", hr));
421
422	return hr;
423	}
424
425
426	static HRESULT directSoundPlayUnlock(PDRVHOSTDSOUND pThis, LPDIRECTSOUNDBUFFER8 pDSB,
427	PVOID pv1, PVOID pv2,
428	DWORD cb1, DWORD cb2)
429	{
430	RT_NOREF(pThis);
431	HRESULT hr = IDirectSoundBuffer8_Unlock(pDSB, pv1, cb1, pv2, cb2);
432	if (FAILED(hr))
433	DSLOGREL(("DSound: Unlocking playback buffer failed with %Rhrc\n", hr));
434	return hr;
435	}
436
437
438	static HRESULT directSoundPlayLock(PDRVHOSTDSOUND pThis, PDSOUNDSTREAM pStreamDS,
439	DWORD dwOffset, DWORD dwBytes,
440	PVOID ppv1, PVOID ppv2,
441	DWORD pcb1, DWORD pcb2,
442	DWORD dwFlags)
443	{
444	AssertReturn(dwBytes, VERR_INVALID_PARAMETER);
445
446	HRESULT hr = E_FAIL;
447	AssertCompile(DRV_DSOUND_RESTORE_ATTEMPTS_MAX > 0);
448	for (unsigned i = 0; i < DRV_DSOUND_RESTORE_ATTEMPTS_MAX; i++)
449	{
450	PVOID pv1, pv2;
451	DWORD cb1, cb2;
452	hr = IDirectSoundBuffer8_Lock(pStreamDS->Out.pDSB, dwOffset, dwBytes, &pv1, &cb1, &pv2, &cb2, dwFlags);
453	if (SUCCEEDED(hr))
454	{
455	if ( (!pv1 \|\| !(cb1 & pStreamDS->uAlign))
456	&& (!pv2 \|\| !(cb2 & pStreamDS->uAlign)))
457	{
458	if (ppv1)
459	*ppv1 = pv1;
460	if (ppv2)
461	*ppv2 = pv2;
462	if (pcb1)
463	*pcb1 = cb1;
464	if (pcb2)
465	*pcb2 = cb2;
466	return S_OK;
467	}
468	DSLOGREL(("DSound: Locking playback buffer returned misaligned buffer: cb1=%#RX32, cb2=%#RX32 (alignment: %#RX32)\n",
469	pcb1, pcb2, pStreamDS->uAlign));
470	directSoundPlayUnlock(pThis, pStreamDS->Out.pDSB, pv1, pv2, cb1, cb2);
471	return E_FAIL;
472	}
473
474	if (hr != DSERR_BUFFERLOST)
475	break;
476
477	LogFlowFunc(("Locking failed due to lost buffer, restoring ...\n"));
478	directSoundPlayRestore(pThis, pStreamDS->Out.pDSB);
479	}
480
481	DSLOGREL(("DSound: Locking playback buffer failed with %Rhrc (dwOff=%ld, dwBytes=%ld)\n", hr, dwOffset, dwBytes));
482	return hr;
483	}
484
485
486	static HRESULT directSoundCaptureUnlock(LPDIRECTSOUNDCAPTUREBUFFER8 pDSCB,
487	PVOID pv1, PVOID pv2,
488	DWORD cb1, DWORD cb2)
489	{
490	HRESULT hr = IDirectSoundCaptureBuffer8_Unlock(pDSCB, pv1, cb1, pv2, cb2);
491	if (FAILED(hr))
492	DSLOGREL(("DSound: Unlocking capture buffer failed with %Rhrc\n", hr));
493	return hr;
494	}
495
496
497	static HRESULT directSoundCaptureLock(PDSOUNDSTREAM pStreamDS,
498	DWORD dwOffset, DWORD dwBytes,
499	PVOID ppv1, PVOID ppv2,
500	DWORD pcb1, DWORD pcb2,
501	DWORD dwFlags)
502	{
503	PVOID pv1 = NULL;
504	PVOID pv2 = NULL;
505	DWORD cb1 = 0;
506	DWORD cb2 = 0;
507
508	HRESULT hr = IDirectSoundCaptureBuffer8_Lock(pStreamDS->In.pDSCB, dwOffset, dwBytes,
509	&pv1, &cb1, &pv2, &cb2, dwFlags);
510	if (FAILED(hr))
511	{
512	DSLOGREL(("DSound: Locking capture buffer failed with %Rhrc\n", hr));
513	return hr;
514	}
515
516	if ( (pv1 && (cb1 & pStreamDS->uAlign))
517	\|\| (pv2 && (cb2 & pStreamDS->uAlign)))
518	{
519	DSLOGREL(("DSound: Locking capture buffer returned misaligned buffer: cb1=%RI32, cb2=%RI32 (alignment: %RU32)\n",
520	cb1, cb2, pStreamDS->uAlign));
521	directSoundCaptureUnlock(pStreamDS->In.pDSCB, pv1, pv2, cb1, cb2);
522	return E_FAIL;
523	}
524
525	*ppv1 = pv1;
526	*ppv2 = pv2;
527	*pcb1 = cb1;
528	*pcb2 = cb2;
529
530	return S_OK;
531	}
532
533
534	/*
535	* DirectSound playback
536	*/
537
538	/**
539	* Creates a DirectSound playback instance.
540	*
541	* @return HRESULT
542	* @param pGUID GUID of device to create the playback interface for. NULL
543	* for the default device.
544	* @param ppDS Where to return the interface to the created instance.
545	*/
546	static HRESULT drvHostDSoundCreateDSPlaybackInstance(LPCGUID pGUID, LPDIRECTSOUND8 *ppDS)
547	{
548	LogFlowFuncEnter();
549
550	LPDIRECTSOUND8 pDS = NULL;
551	HRESULT hrc = CoCreateInstance(CLSID_DirectSound8, NULL, CLSCTX_ALL, IID_IDirectSound8, (void **)&pDS);
552	if (SUCCEEDED(hrc))
553	{
554	hrc = IDirectSound8_Initialize(pDS, pGUID);
555	if (SUCCEEDED(hrc))
556	{
557	HWND hWnd = GetDesktopWindow();
558	hrc = IDirectSound8_SetCooperativeLevel(pDS, hWnd, DSSCL_PRIORITY);
559	if (SUCCEEDED(hrc))
560	{
561	*ppDS = pDS;
562	LogFlowFunc(("LEAVE S_OK\n"));
563	return S_OK;
564	}
565	LogRelMax(64, ("DSound: Setting cooperative level for (hWnd=%p) failed: %Rhrc\n", hWnd, hrc));
566	}
567	else if (hrc == DSERR_NODRIVER) /* Usually means that no playback devices are attached. */
568	LogRelMax(64, ("DSound: DirectSound playback is currently unavailable\n"));
569	else
570	LogRelMax(64, ("DSound: DirectSound playback initialization failed: %Rhrc\n", hrc));
571
572	IDirectSound8_Release(pDS);
573	}
574	else
575	LogRelMax(64, ("DSound: Creating playback instance failed: %Rhrc\n", hrc));
576
577	LogFlowFunc(("LEAVE %Rhrc\n", hrc));
578	return hrc;
579	}
580
581
582	#if 0 /* not used */
583	static HRESULT directSoundPlayGetStatus(PDRVHOSTDSOUND pThis, LPDIRECTSOUNDBUFFER8 pDSB, DWORD *pdwStatus)
584	{
585	AssertPtrReturn(pThis, E_POINTER);
586	AssertPtrReturn(pDSB, E_POINTER);
587
588	AssertPtrNull(pdwStatus);
589
590	DWORD dwStatus = 0;
591	HRESULT hr = E_FAIL;
592	for (unsigned i = 0; i < DRV_DSOUND_RESTORE_ATTEMPTS_MAX; i++)
593	{
594	hr = IDirectSoundBuffer8_GetStatus(pDSB, &dwStatus);
595	if ( hr == DSERR_BUFFERLOST
596	\|\| ( SUCCEEDED(hr)
597	&& (dwStatus & DSBSTATUS_BUFFERLOST)))
598	{
599	LogFlowFunc(("Getting status failed due to lost buffer, restoring ...\n"));
600	directSoundPlayRestore(pThis, pDSB);
601	}
602	else
603	break;
604	}
605
606	if (SUCCEEDED(hr))
607	{
608	if (pdwStatus)
609	*pdwStatus = dwStatus;
610	}
611	else
612	DSLOGREL(("DSound: Retrieving playback status failed with %Rhrc\n", hr));
613
614	return hr;
615	}
616	#endif
617
618
619	/*
620	* DirectSoundCapture
621	*/
622
623	#if 0 /* unused */
624	static LPCGUID dsoundCaptureSelectDevice(PDRVHOSTDSOUND pThis, PPDMAUDIOSTREAMCFG pCfg)
625	{
626	AssertPtrReturn(pThis, NULL);
627	AssertPtrReturn(pCfg, NULL);
628
629	int rc = VINF_SUCCESS;
630
631	LPCGUID pGUID = pThis->Cfg.pGuidCapture;
632	if (!pGUID)
633	{
634	PDSOUNDDEV pDev = NULL;
635	switch (pCfg->enmPath)
636	{
637	case PDMAUDIOPATH_IN_LINE:
638	/*
639	* At the moment we're only supporting line-in in the HDA emulation,
640	* and line-in + mic-in in the AC'97 emulation both are expected
641	* to use the host's mic-in as well.
642	*
643	* So the fall through here is intentional for now.
644	*/
645	case PDMAUDIOPATH_IN_MIC:
646	pDev = (PDSOUNDDEV)DrvAudioHlpDeviceEnumGetDefaultDevice(&pThis->DeviceEnum, PDMAUDIODIR_IN);
647	break;
648
649	default:
650	AssertFailedStmt(rc = VERR_NOT_SUPPORTED);
651	break;
652	}
653
654	if ( RT_SUCCESS(rc)
655	&& pDev)
656	{
657	DSLOG(("DSound: Guest source '%s' is using host recording device '%s'\n",
658	PDMAudioPathGetName(pCfg->enmPath), pDev->Core.szName));
659	pGUID = &pDev->Guid;
660	}
661	if (RT_FAILURE(rc))
662	{
663	LogRel(("DSound: Selecting recording device failed with %Rrc\n", rc));
664	return NULL;
665	}
666	}
667
668	/* This always has to be in the release log. */
669	char *pszGUID = dsoundGUIDToUtf8StrA(pGUID);
670	LogRel(("DSound: Guest source '%s' is using host recording device with GUID '%s'\n",
671	PDMAudioPathGetName(pCfg->enmPath), pszGUID ? pszGUID: "{?}"));
672	RTStrFree(pszGUID);
673
674	return pGUID;
675	}
676	#endif
677
678
679	/**
680	* Creates a DirectSound capture instance.
681	*
682	* @returns HRESULT
683	* @param pGUID GUID of device to create the capture interface for. NULL
684	* for default.
685	* @param ppDSC Where to return the interface to the created instance.
686	*/
687	static HRESULT drvHostDSoundCreateDSCaptureInstance(LPCGUID pGUID, LPDIRECTSOUNDCAPTURE8 *ppDSC)
688	{
689	LogFlowFuncEnter();
690
691	LPDIRECTSOUNDCAPTURE8 pDSC = NULL;
692	HRESULT hrc = CoCreateInstance(CLSID_DirectSoundCapture8, NULL, CLSCTX_ALL, IID_IDirectSoundCapture8, (void **)&pDSC);
693	if (SUCCEEDED(hrc))
694	{
695	hrc = IDirectSoundCapture_Initialize(pDSC, pGUID);
696	if (SUCCEEDED(hrc))
697	{
698	*ppDSC = pDSC;
699	LogFlowFunc(("LEAVE S_OK\n"));
700	return S_OK;
701	}
702	if (hrc == DSERR_NODRIVER) /* Usually means that no capture devices are attached. */
703	LogRelMax(64, ("DSound: Capture device currently is unavailable\n"));
704	else
705	LogRelMax(64, ("DSound: Initializing capturing device failed: %Rhrc\n", hrc));
706	IDirectSoundCapture_Release(pDSC);
707	}
708	else
709	LogRelMax(64, ("DSound: Creating capture instance failed: %Rhrc\n", hrc));
710
711	LogFlowFunc(("LEAVE %Rhrc\n", hrc));
712	return hrc;
713	}
714
715
716	/*********************************************************************************************************************************
717	* PDMIHOSTAUDIO *
718	*********************************************************************************************************************************/
719
720	/**
721	* @interface_method_impl{PDMIHOSTAUDIO,pfnGetConfig}
722	*/
723	static DECLCALLBACK(int) drvHostDSoundHA_GetConfig(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDCFG pBackendCfg)
724	{
725	RT_NOREF(pInterface);
726	AssertPtrReturn(pInterface, VERR_INVALID_POINTER);
727	AssertPtrReturn(pBackendCfg, VERR_INVALID_POINTER);
728
729
730	/*
731	* Fill in the config structure.
732	*/
733	RTStrCopy(pBackendCfg->szName, sizeof(pBackendCfg->szName), "DirectSound");
734	pBackendCfg->cbStream = sizeof(DSOUNDSTREAM);
735	pBackendCfg->fFlags = 0;
736	pBackendCfg->cMaxStreamsIn = UINT32_MAX;
737	pBackendCfg->cMaxStreamsOut = UINT32_MAX;
738
739	return VINF_SUCCESS;
740	}
741
742
743	/**
744	* Callback for the playback device enumeration.
745	*
746	* @return TRUE if continuing enumeration, FALSE if not.
747	* @param pGUID Pointer to GUID of enumerated device. Can be NULL.
748	* @param pwszDescription Pointer to (friendly) description of enumerated device.
749	* @param pwszModule Pointer to module name of enumerated device.
750	* @param lpContext Pointer to PDSOUNDENUMCBCTX context for storing the enumerated information.
751	*
752	* @note Carbon copy of drvHostDSoundEnumOldStyleCaptureCallback with OUT direction.
753	*/
754	static BOOL CALLBACK drvHostDSoundEnumOldStylePlaybackCallback(LPGUID pGUID, LPCWSTR pwszDescription,
755	LPCWSTR pwszModule, PVOID lpContext)
756	{
757	PDSOUNDENUMCBCTX pEnumCtx = (PDSOUNDENUMCBCTX)lpContext;
758	AssertPtrReturn(pEnumCtx, FALSE);
759
760	PPDMAUDIOHOSTENUM pDevEnm = pEnumCtx->pDevEnm;
761	AssertPtrReturn(pDevEnm, FALSE);
762
763	AssertPtrNullReturn(pGUID, FALSE); /* pGUID can be NULL for default device(s). */
764	AssertPtrReturn(pwszDescription, FALSE);
765	RT_NOREF(pwszModule); /* Do not care about pwszModule. */
766
767	int rc;
768	size_t const cbName = RTUtf16CalcUtf8Len(pwszDescription) + 1;
769	PDSOUNDDEV pDev = (PDSOUNDDEV)PDMAudioHostDevAlloc(sizeof(DSOUNDDEV), cbName, 0);
770	if (pDev)
771	{
772	pDev->Core.enmUsage = PDMAUDIODIR_OUT;
773	pDev->Core.enmType = PDMAUDIODEVICETYPE_BUILTIN;
774
775	if (pGUID == NULL)
776	pDev->Core.fFlags = PDMAUDIOHOSTDEV_F_DEFAULT_OUT;
777
778	rc = RTUtf16ToUtf8Ex(pwszDescription, RTSTR_MAX, &pDev->Core.pszName, cbName, NULL);
779	if (RT_SUCCESS(rc))
780	{
781	if (!pGUID)
782	pDev->Core.fFlags \|= PDMAUDIOHOSTDEV_F_DEFAULT_OUT;
783	else
784	{
785	memcpy(&pDev->Guid, pGUID, sizeof(pDev->Guid));
786	rc = RTUuidToStr((PCRTUUID)pGUID, pDev->szGuid, sizeof(pDev->szGuid));
787	AssertRC(rc);
788	}
789	pDev->Core.pszId = &pDev->szGuid[0];
790
791	PDMAudioHostEnumAppend(pDevEnm, &pDev->Core);
792
793	/* Note: Querying the actual device information will be done at some
794	* later point in time outside this enumeration callback to prevent
795	* DSound hangs. */
796	return TRUE;
797	}
798	PDMAudioHostDevFree(&pDev->Core);
799	}
800	else
801	rc = VERR_NO_MEMORY;
802
803	LogRel(("DSound: Error enumeration playback device '%ls': rc=%Rrc\n", pwszDescription, rc));
804	return FALSE; /* Abort enumeration. */
805	}
806
807
808	/**
809	* Callback for the capture device enumeration.
810	*
811	* @return TRUE if continuing enumeration, FALSE if not.
812	* @param pGUID Pointer to GUID of enumerated device. Can be NULL.
813	* @param pwszDescription Pointer to (friendly) description of enumerated device.
814	* @param pwszModule Pointer to module name of enumerated device.
815	* @param lpContext Pointer to PDSOUNDENUMCBCTX context for storing the enumerated information.
816	*
817	* @note Carbon copy of drvHostDSoundEnumOldStylePlaybackCallback with IN direction.
818	*/
819	static BOOL CALLBACK drvHostDSoundEnumOldStyleCaptureCallback(LPGUID pGUID, LPCWSTR pwszDescription,
820	LPCWSTR pwszModule, PVOID lpContext)
821	{
822	PDSOUNDENUMCBCTX pEnumCtx = (PDSOUNDENUMCBCTX )lpContext;
823	AssertPtrReturn(pEnumCtx, FALSE);
824
825	PPDMAUDIOHOSTENUM pDevEnm = pEnumCtx->pDevEnm;
826	AssertPtrReturn(pDevEnm, FALSE);
827
828	AssertPtrNullReturn(pGUID, FALSE); /* pGUID can be NULL for default device(s). */
829	AssertPtrReturn(pwszDescription, FALSE);
830	RT_NOREF(pwszModule); /* Do not care about pwszModule. */
831
832	int rc;
833	size_t const cbName = RTUtf16CalcUtf8Len(pwszDescription) + 1;
834	PDSOUNDDEV pDev = (PDSOUNDDEV)PDMAudioHostDevAlloc(sizeof(DSOUNDDEV), cbName, 0);
835	if (pDev)
836	{
837	pDev->Core.enmUsage = PDMAUDIODIR_IN;
838	pDev->Core.enmType = PDMAUDIODEVICETYPE_BUILTIN;
839
840	rc = RTUtf16ToUtf8Ex(pwszDescription, RTSTR_MAX, &pDev->Core.pszName, cbName, NULL);
841	if (RT_SUCCESS(rc))
842	{
843	if (!pGUID)
844	pDev->Core.fFlags \|= PDMAUDIOHOSTDEV_F_DEFAULT_IN;
845	else
846	{
847	memcpy(&pDev->Guid, pGUID, sizeof(pDev->Guid));
848	rc = RTUuidToStr((PCRTUUID)pGUID, pDev->szGuid, sizeof(pDev->szGuid));
849	AssertRC(rc);
850	}
851	pDev->Core.pszId = &pDev->szGuid[0];
852
853	PDMAudioHostEnumAppend(pDevEnm, &pDev->Core);
854
855	/* Note: Querying the actual device information will be done at some
856	* later point in time outside this enumeration callback to prevent
857	* DSound hangs. */
858	return TRUE;
859	}
860	PDMAudioHostDevFree(&pDev->Core);
861	}
862	else
863	rc = VERR_NO_MEMORY;
864
865	LogRel(("DSound: Error enumeration capture device '%ls', rc=%Rrc\n", pwszDescription, rc));
866	return FALSE; /* Abort enumeration. */
867	}
868
869
870	/**
871	* Queries information for a given (DirectSound) device.
872	*
873	* @returns VBox status code.
874	* @param pDev Audio device to query information for.
875	*/
876	static int drvHostDSoundEnumOldStyleQueryDeviceInfo(PDSOUNDDEV pDev)
877	{
878	AssertPtr(pDev);
879	int rc;
880
881	if (pDev->Core.enmUsage == PDMAUDIODIR_OUT)
882	{
883	LPDIRECTSOUND8 pDS;
884	HRESULT hr = drvHostDSoundCreateDSPlaybackInstance(&pDev->Guid, &pDS);
885	if (SUCCEEDED(hr))
886	{
887	DSCAPS DSCaps;
888	RT_ZERO(DSCaps);
889	DSCaps.dwSize = sizeof(DSCAPS);
890	hr = IDirectSound_GetCaps(pDS, &DSCaps);
891	if (SUCCEEDED(hr))
892	{
893	pDev->Core.cMaxOutputChannels = DSCaps.dwFlags & DSCAPS_PRIMARYSTEREO ? 2 : 1;
894
895	DWORD dwSpeakerCfg;
896	hr = IDirectSound_GetSpeakerConfig(pDS, &dwSpeakerCfg);
897	if (SUCCEEDED(hr))
898	{
899	unsigned uSpeakerCount = 0;
900	switch (DSSPEAKER_CONFIG(dwSpeakerCfg))
901	{
902	case DSSPEAKER_MONO: uSpeakerCount = 1; break;
903	case DSSPEAKER_HEADPHONE: uSpeakerCount = 2; break;
904	case DSSPEAKER_STEREO: uSpeakerCount = 2; break;
905	case DSSPEAKER_QUAD: uSpeakerCount = 4; break;
906	case DSSPEAKER_SURROUND: uSpeakerCount = 4; break;
907	case DSSPEAKER_5POINT1: uSpeakerCount = 6; break;
908	case DSSPEAKER_5POINT1_SURROUND: uSpeakerCount = 6; break;
909	case DSSPEAKER_7POINT1: uSpeakerCount = 8; break;
910	case DSSPEAKER_7POINT1_SURROUND: uSpeakerCount = 8; break;
911	default: break;
912	}
913
914	if (uSpeakerCount) /* Do we need to update the channel count? */
915	pDev->Core.cMaxOutputChannels = uSpeakerCount;
916
917	rc = VINF_SUCCESS;
918	}
919	else
920	{
921	LogRel(("DSound: Error retrieving playback device speaker config, hr=%Rhrc\n", hr));
922	rc = VERR_ACCESS_DENIED; /** @todo Fudge! */
923	}
924	}
925	else
926	{
927	LogRel(("DSound: Error retrieving playback device capabilities, hr=%Rhrc\n", hr));
928	rc = VERR_ACCESS_DENIED; /** @todo Fudge! */
929	}
930
931	IDirectSound8_Release(pDS);
932	}
933	else
934	rc = VERR_GENERAL_FAILURE;
935	}
936	else if (pDev->Core.enmUsage == PDMAUDIODIR_IN)
937	{
938	LPDIRECTSOUNDCAPTURE8 pDSC;
939	HRESULT hr = drvHostDSoundCreateDSCaptureInstance(&pDev->Guid, &pDSC);
940	if (SUCCEEDED(hr))
941	{
942	DSCCAPS DSCCaps;
943	RT_ZERO(DSCCaps);
944	DSCCaps.dwSize = sizeof(DSCCAPS);
945	hr = IDirectSoundCapture_GetCaps(pDSC, &DSCCaps);
946	if (SUCCEEDED(hr))
947	{
948	pDev->Core.cMaxInputChannels = DSCCaps.dwChannels;
949	rc = VINF_SUCCESS;
950	}
951	else
952	{
953	LogRel(("DSound: Error retrieving capture device capabilities, hr=%Rhrc\n", hr));
954	rc = VERR_ACCESS_DENIED; /** @todo Fudge! */
955	}
956
957	IDirectSoundCapture_Release(pDSC);
958	}
959	else
960	rc = VERR_GENERAL_FAILURE;
961	}
962	else
963	AssertFailedStmt(rc = VERR_NOT_SUPPORTED);
964
965	return rc;
966	}
967
968
969	/**
970	* Queries information for @a pDevice and adds an entry to the enumeration.
971	*
972	* @returns VBox status code.
973	* @param pDevEnm The enumeration to add the device to.
974	* @param pDevice The device.
975	* @param enmType The type of device.
976	* @param fDefault Whether it's the default device.
977	*/
978	static int drvHostDSoundEnumNewStyleAdd(PPDMAUDIOHOSTENUM pDevEnm, IMMDevice *pDevice, EDataFlow enmType, bool fDefault)
979	{
980	int rc = VINF_SUCCESS; /* ignore most errors */
981
982	/*
983	* Gather the necessary properties.
984	*/
985	IPropertyStore *pProperties = NULL;
986	HRESULT hrc = pDevice->OpenPropertyStore(STGM_READ, &pProperties);
987	if (SUCCEEDED(hrc))
988	{
989	/* Get the friendly name. */
990	PROPVARIANT VarName;
991	PropVariantInit(&VarName);
992	hrc = pProperties->GetValue(PKEY_Device_FriendlyName, &VarName);
993	if (SUCCEEDED(hrc))
994	{
995	/* Get the DirectSound GUID. */
996	PROPVARIANT VarGUID;
997	PropVariantInit(&VarGUID);
998	hrc = pProperties->GetValue(PKEY_AudioEndpoint_GUID, &VarGUID);
999	if (SUCCEEDED(hrc))
1000	{
1001	/* Get the device format. */
1002	PROPVARIANT VarFormat;
1003	PropVariantInit(&VarFormat);
1004	hrc = pProperties->GetValue(PKEY_AudioEngine_DeviceFormat, &VarFormat);
1005	if (SUCCEEDED(hrc))
1006	{
1007	WAVEFORMATEX const * const pFormat = (WAVEFORMATEX const *)VarFormat.blob.pBlobData;
1008	AssertPtr(pFormat);
1009
1010	/*
1011	* Create a enumeration entry for it.
1012	*/
1013	size_t const cbName = RTUtf16CalcUtf8Len(VarName.pwszVal) + 1;
1014	PDSOUNDDEV pDev = (PDSOUNDDEV)PDMAudioHostDevAlloc(sizeof(DSOUNDDEV), cbName, 0);
1015	if (pDev)
1016	{
1017	pDev->Core.enmUsage = enmType == eRender ? PDMAUDIODIR_OUT : PDMAUDIODIR_IN;
1018	pDev->Core.enmType = PDMAUDIODEVICETYPE_BUILTIN;
1019	if (fDefault)
1020	pDev->Core.fFlags \|= enmType == eRender
1021	? PDMAUDIOHOSTDEV_F_DEFAULT_OUT : PDMAUDIOHOSTDEV_F_DEFAULT_IN;
1022	if (enmType == eRender)
1023	pDev->Core.cMaxOutputChannels = pFormat->nChannels;
1024	else
1025	pDev->Core.cMaxInputChannels = pFormat->nChannels;
1026
1027	//if (fDefault)
1028	rc = RTUuidFromUtf16((PRTUUID)&pDev->Guid, VarGUID.pwszVal);
1029	if (RT_SUCCESS(rc))
1030	{
1031	rc = RTUuidToStr((PCRTUUID)&pDev->Guid, pDev->szGuid, sizeof(pDev->szGuid));
1032	AssertRC(rc);
1033	pDev->Core.pszId = &pDev->szGuid[0];
1034
1035	rc = RTUtf16ToUtf8Ex(VarName.pwszVal, RTSTR_MAX, &pDev->Core.pszName, cbName, NULL);
1036	if (RT_SUCCESS(rc))
1037	PDMAudioHostEnumAppend(pDevEnm, &pDev->Core);
1038	else
1039	PDMAudioHostDevFree(&pDev->Core);
1040	}
1041	else
1042	{
1043	LogFunc(("RTUuidFromUtf16(%ls): %Rrc\n", VarGUID.pwszVal, rc));
1044	PDMAudioHostDevFree(&pDev->Core);
1045	}
1046	}
1047	else
1048	rc = VERR_NO_MEMORY;
1049	PropVariantClear(&VarFormat);
1050	}
1051	else
1052	LogFunc(("Failed to get PKEY_AudioEngine_DeviceFormat: %Rhrc\n", hrc));
1053	PropVariantClear(&VarGUID);
1054	}
1055	else
1056	LogFunc(("Failed to get PKEY_AudioEndpoint_GUID: %Rhrc\n", hrc));
1057	PropVariantClear(&VarName);
1058	}
1059	else
1060	LogFunc(("Failed to get PKEY_Device_FriendlyName: %Rhrc\n", hrc));
1061	pProperties->Release();
1062	}
1063	else
1064	LogFunc(("OpenPropertyStore failed: %Rhrc\n", hrc));
1065
1066	if (hrc == E_OUTOFMEMORY && RT_SUCCESS_NP(rc))
1067	rc = VERR_NO_MEMORY;
1068	return rc;
1069	}
1070
1071
1072	/**
1073	* Does a (Re-)enumeration of the host's playback + capturing devices.
1074	*
1075	* @return VBox status code.
1076	* @param pDevEnm Where to store the enumerated devices.
1077	*/
1078	static int drvHostDSoundEnumerateDevices(PPDMAUDIOHOSTENUM pDevEnm)
1079	{
1080	DSLOG(("DSound: Enumerating devices ...\n"));
1081
1082	/*
1083	* Use the Vista+ API.
1084	*/
1085	IMMDeviceEnumerator *pEnumerator;
1086	HRESULT hrc = CoCreateInstance(__uuidof(MMDeviceEnumerator), 0, CLSCTX_ALL,
1087	__uuidof(IMMDeviceEnumerator), (void **)&pEnumerator);
1088	if (SUCCEEDED(hrc))
1089	{
1090	int rc = VINF_SUCCESS;
1091	for (unsigned idxPass = 0; idxPass < 2 && RT_SUCCESS(rc); idxPass++)
1092	{
1093	EDataFlow const enmType = idxPass == 0 ? EDataFlow::eRender : EDataFlow::eCapture;
1094
1095	/* Get the default device first. */
1096	IMMDevice *pDefaultDevice = NULL;
1097	hrc = pEnumerator->GetDefaultAudioEndpoint(enmType, eMultimedia, &pDefaultDevice);
1098	if (SUCCEEDED(hrc))
1099	rc = drvHostDSoundEnumNewStyleAdd(pDevEnm, pDefaultDevice, enmType, true);
1100	else
1101	pDefaultDevice = NULL;
1102
1103	/* Enumerate the devices. */
1104	IMMDeviceCollection *pCollection = NULL;
1105	hrc = pEnumerator->EnumAudioEndpoints(enmType, DEVICE_STATE_ACTIVE /\| DEVICE_STATE_UNPLUGGED?/, &pCollection);
1106	if (SUCCEEDED(hrc) && pCollection != NULL)
1107	{
1108	UINT cDevices = 0;
1109	hrc = pCollection->GetCount(&cDevices);
1110	if (SUCCEEDED(hrc))
1111	{
1112	for (UINT idxDevice = 0; idxDevice < cDevices && RT_SUCCESS(rc); idxDevice++)
1113	{
1114	IMMDevice *pDevice = NULL;
1115	hrc = pCollection->Item(idxDevice, &pDevice);
1116	if (SUCCEEDED(hrc) && pDevice)
1117	{
1118	if (pDevice != pDefaultDevice)
1119	rc = drvHostDSoundEnumNewStyleAdd(pDevEnm, pDevice, enmType, false);
1120	pDevice->Release();
1121	}
1122	}
1123	}
1124	pCollection->Release();
1125	}
1126	else
1127	LogRelMax(10, ("EnumAudioEndpoints(%s) failed: %Rhrc\n", idxPass == 0 ? "output" : "input", hrc));
1128
1129	if (pDefaultDevice)
1130	pDefaultDevice->Release();
1131	}
1132	pEnumerator->Release();
1133	if (pDevEnm->cDevices > 0 \|\| RT_FAILURE(rc))
1134	{
1135	DSLOG(("DSound: Enumerating devices done - %u device (%Rrc)\n", pDevEnm->cDevices, rc));
1136	return rc;
1137	}
1138	}
1139
1140	/*
1141	* Fall back to dsound.
1142	*/
1143	/* Resolve symbols once. */
1144	static PFNDIRECTSOUNDENUMERATEW volatile s_pfnDirectSoundEnumerateW = NULL;
1145	static PFNDIRECTSOUNDCAPTUREENUMERATEW volatile s_pfnDirectSoundCaptureEnumerateW = NULL;
1146
1147	PFNDIRECTSOUNDENUMERATEW pfnDirectSoundEnumerateW = s_pfnDirectSoundEnumerateW;
1148	PFNDIRECTSOUNDCAPTUREENUMERATEW pfnDirectSoundCaptureEnumerateW = s_pfnDirectSoundCaptureEnumerateW;
1149	if (!pfnDirectSoundEnumerateW \|\| !pfnDirectSoundCaptureEnumerateW)
1150	{
1151	RTLDRMOD hModDSound = NIL_RTLDRMOD;
1152	int rc = RTLdrLoadSystem("dsound.dll", true /fNoUnload/, &hModDSound);
1153	if (RT_SUCCESS(rc))
1154	{
1155	rc = RTLdrGetSymbol(hModDSound, "DirectSoundEnumerateW", (void **)&pfnDirectSoundEnumerateW);
1156	if (RT_SUCCESS(rc))
1157	s_pfnDirectSoundEnumerateW = pfnDirectSoundEnumerateW;
1158	else
1159	LogRel(("DSound: Failed to get dsound.dll export DirectSoundEnumerateW: %Rrc\n", rc));
1160
1161	rc = RTLdrGetSymbol(hModDSound, "DirectSoundCaptureEnumerateW", (void **)&pfnDirectSoundCaptureEnumerateW);
1162	if (RT_SUCCESS(rc))
1163	s_pfnDirectSoundCaptureEnumerateW = pfnDirectSoundCaptureEnumerateW;
1164	else
1165	LogRel(("DSound: Failed to get dsound.dll export DirectSoundCaptureEnumerateW: %Rrc\n", rc));
1166	RTLdrClose(hModDSound);
1167	}
1168	else
1169	LogRel(("DSound: Unable to load dsound.dll for enumerating devices: %Rrc\n", rc));
1170	if (!pfnDirectSoundEnumerateW && !pfnDirectSoundCaptureEnumerateW)
1171	return rc;
1172	}
1173
1174	/* Common callback context for both playback and capture enumerations: */
1175	DSOUNDENUMCBCTX EnumCtx;
1176	EnumCtx.fFlags = 0;
1177	EnumCtx.pDevEnm = pDevEnm;
1178
1179	/* Enumerate playback devices. */
1180	if (pfnDirectSoundEnumerateW)
1181	{
1182	DSLOG(("DSound: Enumerating playback devices ...\n"));
1183	HRESULT hr = pfnDirectSoundEnumerateW(&drvHostDSoundEnumOldStylePlaybackCallback, &EnumCtx);
1184	if (FAILED(hr))
1185	LogRel(("DSound: Error enumerating host playback devices: %Rhrc\n", hr));
1186	}
1187
1188	/* Enumerate capture devices. */
1189	if (pfnDirectSoundCaptureEnumerateW)
1190	{
1191	DSLOG(("DSound: Enumerating capture devices ...\n"));
1192	HRESULT hr = pfnDirectSoundCaptureEnumerateW(&drvHostDSoundEnumOldStyleCaptureCallback, &EnumCtx);
1193	if (FAILED(hr))
1194	LogRel(("DSound: Error enumerating host capture devices: %Rhrc\n", hr));
1195	}
1196
1197	/*
1198	* Query Information for all enumerated devices.
1199	* Note! This is problematic to do from the enumeration callbacks.
1200	*/
1201	PDSOUNDDEV pDev;
1202	RTListForEach(&pDevEnm->LstDevices, pDev, DSOUNDDEV, Core.ListEntry)
1203	{
1204	drvHostDSoundEnumOldStyleQueryDeviceInfo(pDev); /* ignore rc */
1205	}
1206
1207	DSLOG(("DSound: Enumerating devices done\n"));
1208
1209	return VINF_SUCCESS;
1210	}
1211
1212
1213	/**
1214	* @interface_method_impl{PDMIHOSTAUDIO,pfnGetDevices}
1215	*/
1216	static DECLCALLBACK(int) drvHostDSoundHA_GetDevices(PPDMIHOSTAUDIO pInterface, PPDMAUDIOHOSTENUM pDeviceEnum)
1217	{
1218	RT_NOREF(pInterface);
1219	AssertPtrReturn(pDeviceEnum, VERR_INVALID_POINTER);
1220
1221	PDMAudioHostEnumInit(pDeviceEnum);
1222	int rc = drvHostDSoundEnumerateDevices(pDeviceEnum);
1223	if (RT_FAILURE(rc))
1224	PDMAudioHostEnumDelete(pDeviceEnum);
1225
1226	LogFlowFunc(("Returning %Rrc\n", rc));
1227	return rc;
1228	}
1229
1230
1231	/**
1232	* @interface_method_impl{PDMIHOSTAUDIO,pfnGetStatus}
1233	*/
1234	static DECLCALLBACK(PDMAUDIOBACKENDSTS) drvHostDSoundHA_GetStatus(PPDMIHOSTAUDIO pInterface, PDMAUDIODIR enmDir)
1235	{
1236	RT_NOREF(pInterface, enmDir);
1237	return PDMAUDIOBACKENDSTS_RUNNING;
1238	}
1239
1240
1241	/**
1242	* Converts from PDM stream config to windows WAVEFORMATEXTENSIBLE struct.
1243	*
1244	* @param pCfg The PDM audio stream config to convert from.
1245	* @param pFmt The windows structure to initialize.
1246	*/
1247	static void dsoundWaveFmtFromCfg(PCPDMAUDIOSTREAMCFG pCfg, PWAVEFORMATEXTENSIBLE pFmt)
1248	{
1249	RT_ZERO(*pFmt);
1250	pFmt->Format.wFormatTag = WAVE_FORMAT_PCM;
1251	pFmt->Format.nChannels = PDMAudioPropsChannels(&pCfg->Props);
1252	pFmt->Format.wBitsPerSample = PDMAudioPropsSampleBits(&pCfg->Props);
1253	pFmt->Format.nSamplesPerSec = PDMAudioPropsHz(&pCfg->Props);
1254	pFmt->Format.nBlockAlign = PDMAudioPropsFrameSize(&pCfg->Props);
1255	pFmt->Format.nAvgBytesPerSec = PDMAudioPropsFramesToBytes(&pCfg->Props, PDMAudioPropsHz(&pCfg->Props));
1256	pFmt->Format.cbSize = 0; /* No extra data specified. */
1257
1258	/*
1259	* We need to use the extensible structure if there are more than two channels
1260	* or if the channels have non-standard assignments.
1261	*/
1262	if ( pFmt->Format.nChannels > 2
1263	\|\| ( pFmt->Format.nChannels == 1
1264	? pCfg->Props.aidChannels[0] != PDMAUDIOCHANNELID_MONO
1265	: pCfg->Props.aidChannels[0] != PDMAUDIOCHANNELID_FRONT_LEFT
1266	\|\| pCfg->Props.aidChannels[1] != PDMAUDIOCHANNELID_FRONT_RIGHT))
1267	{
1268	pFmt->Format.wFormatTag = WAVE_FORMAT_EXTENSIBLE;
1269	pFmt->Format.cbSize = sizeof(*pFmt) - sizeof(pFmt->Format);
1270	pFmt->Samples.wValidBitsPerSample = PDMAudioPropsSampleBits(&pCfg->Props);
1271	pFmt->SubFormat = KSDATAFORMAT_SUBTYPE_PCM;
1272	pFmt->dwChannelMask = 0;
1273	unsigned const cSrcChannels = pFmt->Format.nChannels;
1274	for (unsigned i = 0; i < cSrcChannels; i++)
1275	if ( pCfg->Props.aidChannels[i] >= PDMAUDIOCHANNELID_FIRST_STANDARD
1276	&& pCfg->Props.aidChannels[i] < PDMAUDIOCHANNELID_END_STANDARD)
1277	pFmt->dwChannelMask \|= RT_BIT_32(pCfg->Props.aidChannels[i] - PDMAUDIOCHANNELID_FIRST_STANDARD);
1278	else
1279	pFmt->Format.nChannels -= 1;
1280	}
1281	}
1282
1283
1284	/**
1285	* Resets the state of a DirectSound stream, clearing the buffer content.
1286	*
1287	* @param pThis Host audio driver instance.
1288	* @param pStreamDS Stream to reset state for.
1289	*/
1290	static void drvHostDSoundStreamReset(PDRVHOSTDSOUND pThis, PDSOUNDSTREAM pStreamDS)
1291	{
1292	RT_NOREF(pThis);
1293	LogFunc(("Resetting %s\n", pStreamDS->Cfg.enmDir == PDMAUDIODIR_IN ? "capture" : "playback"));
1294
1295	if (pStreamDS->Cfg.enmDir == PDMAUDIODIR_IN)
1296	{
1297	/*
1298	* Input streams.
1299	*/
1300	LogFunc(("Resetting capture stream '%s'\n", pStreamDS->Cfg.szName));
1301
1302	/* Reset the state: */
1303	pStreamDS->msLastTransfer = 0;
1304	/** @todo r=bird: We set the read position to zero here, but shouldn't we query it
1305	* from the buffer instead given that there isn't any interface for repositioning
1306	* to the start of the buffer as with playback buffers? */
1307	pStreamDS->In.offReadPos = 0;
1308	pStreamDS->In.cOverruns = 0;
1309
1310	/* Clear the buffer content: */
1311	AssertPtr(pStreamDS->In.pDSCB);
1312	if (pStreamDS->In.pDSCB)
1313	{
1314	PVOID pv1 = NULL;
1315	DWORD cb1 = 0;
1316	PVOID pv2 = NULL;
1317	DWORD cb2 = 0;
1318	HRESULT hrc = IDirectSoundCaptureBuffer8_Lock(pStreamDS->In.pDSCB, 0, pStreamDS->cbBufSize,
1319	&pv1, &cb1, &pv2, &cb2, 0 /fFlags/);
1320	if (SUCCEEDED(hrc))
1321	{
1322	PDMAudioPropsClearBuffer(&pStreamDS->Cfg.Props, pv1, cb1, PDMAUDIOPCMPROPS_B2F(&pStreamDS->Cfg.Props, cb1));
1323	if (pv2 && cb2)
1324	PDMAudioPropsClearBuffer(&pStreamDS->Cfg.Props, pv2, cb2, PDMAUDIOPCMPROPS_B2F(&pStreamDS->Cfg.Props, cb2));
1325	hrc = IDirectSoundCaptureBuffer8_Unlock(pStreamDS->In.pDSCB, pv1, cb1, pv2, cb2);
1326	if (FAILED(hrc))
1327	LogRelMaxFunc(64, ("DSound: Unlocking capture buffer '%s' after reset failed: %Rhrc\n",
1328	pStreamDS->Cfg.szName, hrc));
1329	}
1330	else
1331	LogRelMaxFunc(64, ("DSound: Locking capture buffer '%s' for reset failed: %Rhrc\n",
1332	pStreamDS->Cfg.szName, hrc));
1333	}
1334	}
1335	else
1336	{
1337	/*
1338	* Output streams.
1339	*/
1340	Assert(pStreamDS->Cfg.enmDir == PDMAUDIODIR_OUT);
1341	LogFunc(("Resetting playback stream '%s'\n", pStreamDS->Cfg.szName));
1342
1343	/* If draining was enagaged, make sure dsound has stopped playing: */
1344	if (pStreamDS->Out.fDrain && pStreamDS->Out.pDSB)
1345	pStreamDS->Out.pDSB->Stop();
1346
1347	/* Reset the internal state: */
1348	pStreamDS->msLastTransfer = 0;
1349	pStreamDS->Out.fFirstTransfer = true;
1350	pStreamDS->Out.fDrain = false;
1351	pStreamDS->Out.cbLastTransferred = 0;
1352	pStreamDS->Out.cbTransferred = 0;
1353	pStreamDS->Out.cbWritten = 0;
1354	pStreamDS->Out.offWritePos = 0;
1355	pStreamDS->Out.offPlayCursorLastPending = 0;
1356	pStreamDS->Out.offPlayCursorLastPlayed = 0;
1357
1358	/* Reset the buffer content and repositioning the buffer to the start of the buffer. */
1359	AssertPtr(pStreamDS->Out.pDSB);
1360	if (pStreamDS->Out.pDSB)
1361	{
1362	HRESULT hrc = IDirectSoundBuffer8_SetCurrentPosition(pStreamDS->Out.pDSB, 0);
1363	if (FAILED(hrc))
1364	LogRelMaxFunc(64, ("DSound: Failed to set buffer position for '%s': %Rhrc\n", pStreamDS->Cfg.szName, hrc));
1365
1366	PVOID pv1 = NULL;
1367	DWORD cb1 = 0;
1368	PVOID pv2 = NULL;
1369	DWORD cb2 = 0;
1370	hrc = IDirectSoundBuffer8_Lock(pStreamDS->Out.pDSB, 0, pStreamDS->cbBufSize, &pv1, &cb1, &pv2, &cb2, 0 /fFlags/);
1371	if (hrc == DSERR_BUFFERLOST)
1372	{
1373	directSoundPlayRestore(pThis, pStreamDS->Out.pDSB);
1374	hrc = IDirectSoundBuffer8_Lock(pStreamDS->Out.pDSB, 0, pStreamDS->cbBufSize, &pv1, &cb1, &pv2, &cb2, 0 /fFlags/);
1375	}
1376	if (SUCCEEDED(hrc))
1377	{
1378	PDMAudioPropsClearBuffer(&pStreamDS->Cfg.Props, pv1, cb1, PDMAUDIOPCMPROPS_B2F(&pStreamDS->Cfg.Props, cb1));
1379	if (pv2 && cb2)
1380	PDMAudioPropsClearBuffer(&pStreamDS->Cfg.Props, pv2, cb2, PDMAUDIOPCMPROPS_B2F(&pStreamDS->Cfg.Props, cb2));
1381
1382	hrc = IDirectSoundBuffer8_Unlock(pStreamDS->Out.pDSB, pv1, cb1, pv2, cb2);
1383	if (FAILED(hrc))
1384	LogRelMaxFunc(64, ("DSound: Unlocking playback buffer '%s' after reset failed: %Rhrc\n",
1385	pStreamDS->Cfg.szName, hrc));
1386	}
1387	else
1388	LogRelMaxFunc(64, ("DSound: Locking playback buffer '%s' for reset failed: %Rhrc\n", pStreamDS->Cfg.szName, hrc));
1389	}
1390	}
1391	}
1392
1393
1394	/**
1395	* Worker for drvHostDSoundHA_StreamCreate that creates caputre stream.
1396	*
1397	* @returns Windows COM status code.
1398	* @param pThis The DSound instance data.
1399	* @param pStreamDS The stream instance data.
1400	* @param pCfgReq The requested stream config (input).
1401	* @param pCfgAcq Where to return the actual stream config. This is a
1402	* copy of @a *pCfgReq when called.
1403	* @param pWaveFmtExt On input the requested stream format. Updated to the
1404	* actual stream format on successful return.
1405	*/
1406	static HRESULT drvHostDSoundStreamCreateCapture(PDRVHOSTDSOUND pThis, PDSOUNDSTREAM pStreamDS, PCPDMAUDIOSTREAMCFG pCfgReq,
1407	PPDMAUDIOSTREAMCFG pCfgAcq, WAVEFORMATEXTENSIBLE *pWaveFmtExt)
1408	{
1409	Assert(pStreamDS->In.pDSCB == NULL);
1410	HRESULT hrc;
1411
1412	/*
1413	* Create, initialize and set up a IDirectSoundCapture instance the first time
1414	* we go thru here.
1415	*/
1416	/** @todo bird: Or should we rather just throw this away after we've gotten the
1417	* capture buffer? Old code would just leak it... */
1418	if (pThis->pDSC == NULL)
1419	{
1420	hrc = drvHostDSoundCreateDSCaptureInstance(pThis->Cfg.pGuidCapture, &pThis->pDSC);
1421	if (FAILED(hrc))
1422	return hrc; /* The worker has complained to the release log already. */
1423	}
1424
1425	/*
1426	* Create the capture buffer.
1427	*/
1428	DSCBUFFERDESC BufferDesc =
1429	{
1430	/.dwSize = / sizeof(BufferDesc),
1431	/.dwFlags = / 0,
1432	/.dwBufferBytes =/ PDMAudioPropsFramesToBytes(&pCfgReq->Props, pCfgReq->Backend.cFramesBufferSize),
1433	/.dwReserved = / 0,
1434	/.lpwfxFormat = / &pWaveFmtExt->Format,
1435	/.dwFXCount = / 0,
1436	/.lpDSCFXDesc = / NULL
1437	};
1438
1439	LogRel2(("DSound: Requested capture buffer is %#x B / %u B / %RU64 ms\n", BufferDesc.dwBufferBytes, BufferDesc.dwBufferBytes,
1440	PDMAudioPropsBytesToMilli(&pCfgReq->Props, BufferDesc.dwBufferBytes)));
1441
1442	LPDIRECTSOUNDCAPTUREBUFFER pLegacyDSCB = NULL;
1443	hrc = IDirectSoundCapture_CreateCaptureBuffer(pThis->pDSC, &BufferDesc, &pLegacyDSCB, NULL);
1444	if (FAILED(hrc))
1445	{
1446	LogRelMax(64, ("DSound: Creating capture buffer for '%s' failed: %Rhrc\n", pCfgReq->szName, hrc));
1447	return hrc;
1448	}
1449
1450	/* Get the IDirectSoundCaptureBuffer8 version of the interface. */
1451	hrc = IDirectSoundCaptureBuffer_QueryInterface(pLegacyDSCB, IID_IDirectSoundCaptureBuffer8, (void **)&pStreamDS->In.pDSCB);
1452	IDirectSoundCaptureBuffer_Release(pLegacyDSCB);
1453	if (FAILED(hrc))
1454	{
1455	LogRelMax(64, ("DSound: Querying IID_IDirectSoundCaptureBuffer8 for '%s' failed: %Rhrc\n", pCfgReq->szName, hrc));
1456	return hrc;
1457	}
1458
1459	/*
1460	* Query the actual stream configuration.
1461	*/
1462	#if 0 /** @todo r=bird: WTF was this for? */
1463	DWORD offByteReadPos = 0;
1464	hrc = IDirectSoundCaptureBuffer8_GetCurrentPosition(pStreamDS->In.pDSCB, NULL, &offByteReadPos);
1465	if (FAILED(hrc))
1466	{
1467	offByteReadPos = 0;
1468	DSLOGREL(("DSound: Getting capture position failed with %Rhrc\n", hr));
1469	}
1470	#endif
1471	RT_ZERO(*pWaveFmtExt);
1472	hrc = IDirectSoundCaptureBuffer8_GetFormat(pStreamDS->In.pDSCB, &pWaveFmtExt->Format, sizeof(*pWaveFmtExt), NULL);
1473	if (SUCCEEDED(hrc))
1474	{
1475	/** @todo r=bird: We aren't converting/checking the pWaveFmtX content... */
1476
1477	DSCBCAPS BufferCaps = { /.dwSize = / sizeof(BufferCaps), 0, 0, 0 };
1478	hrc = IDirectSoundCaptureBuffer8_GetCaps(pStreamDS->In.pDSCB, &BufferCaps);
1479	if (SUCCEEDED(hrc))
1480	{
1481	LogRel2(("DSound: Acquired capture buffer capabilities for '%s':\n"
1482	"DSound: dwFlags = %#RX32\n"
1483	"DSound: dwBufferBytes = %#RX32 B / %RU32 B / %RU64 ms\n"
1484	"DSound: dwReserved = %#RX32\n",
1485	pCfgReq->szName, BufferCaps.dwFlags, BufferCaps.dwBufferBytes, BufferCaps.dwBufferBytes,
1486	PDMAudioPropsBytesToMilli(&pCfgReq->Props, BufferCaps.dwBufferBytes), BufferCaps.dwReserved ));
1487
1488	/* Update buffer related stuff: */
1489	pStreamDS->In.offReadPos = 0; /** @todo shouldn't we use offBytReadPos here to "read at the initial capture position"? */
1490	pStreamDS->cbBufSize = BufferCaps.dwBufferBytes;
1491	pCfgAcq->Backend.cFramesBufferSize = PDMAudioPropsBytesToFrames(&pCfgAcq->Props, BufferCaps.dwBufferBytes);
1492
1493	#if 0 /** @todo r=bird: uAlign isn't set anywhere, so this hasn't been checking anything for a while... */
1494	if (bc.dwBufferBytes & pStreamDS->uAlign)
1495	DSLOGREL(("DSound: Capture GetCaps returned misaligned buffer: size %RU32, alignment %RU32\n",
1496	bc.dwBufferBytes, pStreamDS->uAlign + 1));
1497	#endif
1498	LogFlow(("returns S_OK\n"));
1499	return S_OK;
1500	}
1501	LogRelMax(64, ("DSound: Getting capture buffer capabilities for '%s' failed: %Rhrc\n", pCfgReq->szName, hrc));
1502	}
1503	else
1504	LogRelMax(64, ("DSound: Getting capture format for '%s' failed: %Rhrc\n", pCfgReq->szName, hrc));
1505
1506	IDirectSoundCaptureBuffer8_Release(pStreamDS->In.pDSCB);
1507	pStreamDS->In.pDSCB = NULL;
1508	LogFlowFunc(("returns %Rhrc\n", hrc));
1509	return hrc;
1510	}
1511
1512
1513	/**
1514	* Worker for drvHostDSoundHA_StreamCreate that creates playback stream.
1515	*
1516	* @returns Windows COM status code.
1517	* @param pThis The DSound instance data.
1518	* @param pStreamDS The stream instance data.
1519	* @param pCfgReq The requested stream config (input).
1520	* @param pCfgAcq Where to return the actual stream config. This is a
1521	* copy of @a *pCfgReq when called.
1522	* @param pWaveFmtExt On input the requested stream format.
1523	* Updated to the actual stream format on successful
1524	* return.
1525	*/
1526	static HRESULT drvHostDSoundStreamCreatePlayback(PDRVHOSTDSOUND pThis, PDSOUNDSTREAM pStreamDS, PCPDMAUDIOSTREAMCFG pCfgReq,
1527	PPDMAUDIOSTREAMCFG pCfgAcq, WAVEFORMATEXTENSIBLE *pWaveFmtExt)
1528	{
1529	Assert(pStreamDS->Out.pDSB == NULL);
1530	HRESULT hrc;
1531
1532	/*
1533	* Create, initialize and set up a DirectSound8 instance the first time
1534	* we go thru here.
1535	*/
1536	/** @todo bird: Or should we rather just throw this away after we've gotten the
1537	* sound buffer? Old code would just leak it... */
1538	if (pThis->pDS == NULL)
1539	{
1540	hrc = drvHostDSoundCreateDSPlaybackInstance(pThis->Cfg.pGuidPlay, &pThis->pDS);
1541	if (FAILED(hrc))
1542	return hrc; /* The worker has complained to the release log already. */
1543	}
1544
1545	/*
1546	* As we reuse our (secondary) buffer for playing out data as it comes in,
1547	* we're using this buffer as a so-called streaming buffer.
1548	*
1549	* See https://msdn.microsoft.com/en-us/library/windows/desktop/ee419014(v=vs.85).aspx
1550	*
1551	* However, as we do not want to use memory on the sound device directly
1552	* (as most modern audio hardware on the host doesn't have this anyway),
1553	* we're not going to use DSBCAPS_STATIC for that.
1554	*
1555	* Instead we're specifying DSBCAPS_LOCSOFTWARE, as this fits the bill
1556	* of copying own buffer data to our secondary's Direct Sound buffer.
1557	*/
1558	DSBUFFERDESC BufferDesc =
1559	{
1560	/.dwSize = / sizeof(BufferDesc),
1561	/.dwFlags = / DSBCAPS_GLOBALFOCUS \| DSBCAPS_GETCURRENTPOSITION2 \| DSBCAPS_LOCSOFTWARE,
1562	/.dwBufferBytes = / PDMAudioPropsFramesToBytes(&pCfgReq->Props, pCfgReq->Backend.cFramesBufferSize),
1563	/.dwReserved = / 0,
1564	/.lpwfxFormat = / &pWaveFmtExt->Format,
1565	/.guid3DAlgorithm = {0, 0, 0, {0,0,0,0, 0,0,0,0}} /
1566	};
1567	LogRel2(("DSound: Requested playback buffer is %#x B / %u B / %RU64 ms\n", BufferDesc.dwBufferBytes, BufferDesc.dwBufferBytes,
1568	PDMAudioPropsBytesToMilli(&pCfgReq->Props, BufferDesc.dwBufferBytes)));
1569
1570	LPDIRECTSOUNDBUFFER pLegacyDSB = NULL;
1571	hrc = IDirectSound8_CreateSoundBuffer(pThis->pDS, &BufferDesc, &pLegacyDSB, NULL);
1572	if (FAILED(hrc))
1573	{
1574	LogRelMax(64, ("DSound: Creating playback sound buffer for '%s' failed: %Rhrc\n", pCfgReq->szName, hrc));
1575	return hrc;
1576	}
1577
1578	/* Get the IDirectSoundBuffer8 version of the interface. */
1579	hrc = IDirectSoundBuffer_QueryInterface(pLegacyDSB, IID_IDirectSoundBuffer8, (PVOID *)&pStreamDS->Out.pDSB);
1580	IDirectSoundBuffer_Release(pLegacyDSB);
1581	if (FAILED(hrc))
1582	{
1583	LogRelMax(64, ("DSound: Querying IID_IDirectSoundBuffer8 for '%s' failed: %Rhrc\n", pCfgReq->szName, hrc));
1584	return hrc;
1585	}
1586
1587	/*
1588	* Query the actual stream parameters, they may differ from what we requested.
1589	*/
1590	RT_ZERO(*pWaveFmtExt);
1591	hrc = IDirectSoundBuffer8_GetFormat(pStreamDS->Out.pDSB, &pWaveFmtExt->Format, sizeof(*pWaveFmtExt), NULL);
1592	if (SUCCEEDED(hrc))
1593	{
1594	/** @todo r=bird: We aren't converting/checking the pWaveFmtX content... */
1595
1596	DSBCAPS BufferCaps = { /.dwSize = / sizeof(BufferCaps), 0, 0, 0, 0 };
1597	hrc = IDirectSoundBuffer8_GetCaps(pStreamDS->Out.pDSB, &BufferCaps);
1598	if (SUCCEEDED(hrc))
1599	{
1600	LogRel2(("DSound: Acquired playback buffer capabilities for '%s':\n"
1601	"DSound: dwFlags = %#RX32\n"
1602	"DSound: dwBufferBytes = %#RX32 B / %RU32 B / %RU64 ms\n"
1603	"DSound: dwUnlockTransferRate = %RU32 KB/s\n"
1604	"DSound: dwPlayCpuOverhead = %RU32%%\n",
1605	pCfgReq->szName, BufferCaps.dwFlags, BufferCaps.dwBufferBytes, BufferCaps.dwBufferBytes,
1606	PDMAudioPropsBytesToMilli(&pCfgReq->Props, BufferCaps.dwBufferBytes),
1607	BufferCaps.dwUnlockTransferRate, BufferCaps.dwPlayCpuOverhead));
1608
1609	/* Update buffer related stuff: */
1610	pStreamDS->cbBufSize = BufferCaps.dwBufferBytes;
1611	pCfgAcq->Backend.cFramesBufferSize = PDMAudioPropsBytesToFrames(&pCfgAcq->Props, BufferCaps.dwBufferBytes);
1612	pCfgAcq->Backend.cFramesPeriod = pCfgAcq->Backend.cFramesBufferSize / 4; /* total fiction */
1613	pCfgAcq->Backend.cFramesPreBuffering = pCfgReq->Backend.cFramesPreBuffering * pCfgAcq->Backend.cFramesBufferSize
1614	/ RT_MAX(pCfgReq->Backend.cFramesBufferSize, 1);
1615
1616	#if 0 /** @todo r=bird: uAlign isn't set anywhere, so this hasn't been checking anything for a while... */
1617	if (bc.dwBufferBytes & pStreamDS->uAlign)
1618	DSLOGREL(("DSound: Playback capabilities returned misaligned buffer: size %RU32, alignment %RU32\n",
1619	bc.dwBufferBytes, pStreamDS->uAlign + 1));
1620	#endif
1621	LogFlow(("returns S_OK\n"));
1622	return S_OK;
1623	}
1624	LogRelMax(64, ("DSound: Getting playback buffer capabilities for '%s' failed: %Rhrc\n", pCfgReq->szName, hrc));
1625	}
1626	else
1627	LogRelMax(64, ("DSound: Getting playback format for '%s' failed: %Rhrc\n", pCfgReq->szName, hrc));
1628
1629	IDirectSoundBuffer8_Release(pStreamDS->Out.pDSB);
1630	pStreamDS->Out.pDSB = NULL;
1631	LogFlowFunc(("returns %Rhrc\n", hrc));
1632	return hrc;
1633	}
1634
1635
1636	/**
1637	* @interface_method_impl{PDMIHOSTAUDIO,pfnStreamCreate}
1638	*/
1639	static DECLCALLBACK(int) drvHostDSoundHA_StreamCreate(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDSTREAM pStream,
1640	PCPDMAUDIOSTREAMCFG pCfgReq, PPDMAUDIOSTREAMCFG pCfgAcq)
1641	{
1642	PDRVHOSTDSOUND pThis = RT_FROM_MEMBER(pInterface, DRVHOSTDSOUND, IHostAudio);
1643	PDSOUNDSTREAM pStreamDS = (PDSOUNDSTREAM)pStream;
1644	AssertPtrReturn(pStreamDS, VERR_INVALID_POINTER);
1645	AssertPtrReturn(pCfgReq, VERR_INVALID_POINTER);
1646	AssertPtrReturn(pCfgAcq, VERR_INVALID_POINTER);
1647	AssertReturn(pCfgReq->enmDir == PDMAUDIODIR_IN \|\| pCfgReq->enmDir == PDMAUDIODIR_OUT, VERR_INVALID_PARAMETER);
1648	Assert(PDMAudioStrmCfgEquals(pCfgReq, pCfgAcq));
1649
1650	const char * const pszStreamType = pCfgReq->enmDir == PDMAUDIODIR_IN ? "capture" : "playback"; RT_NOREF(pszStreamType);
1651	LogFlowFunc(("enmPath=%s '%s'\n", PDMAudioPathGetName(pCfgReq->enmPath), pCfgReq->szName));
1652	RTListInit(&pStreamDS->ListEntry); /* paranoia */
1653
1654	/*
1655	* DSound has different COM interfaces for working with input and output
1656	* streams, so we'll quickly part ways here after some common format
1657	* specification setup and logging.
1658	*/
1659	#if defined(RTLOG_REL_ENABLED) \|\| defined(LOG_ENABLED)
1660	char szTmp[64];
1661	#endif
1662	LogRel2(("DSound: Opening %s stream '%s' (%s)\n", pCfgReq->szName, pszStreamType,
1663	PDMAudioPropsToString(&pCfgReq->Props, szTmp, sizeof(szTmp))));
1664
1665	WAVEFORMATEXTENSIBLE WaveFmtExt;
1666	dsoundWaveFmtFromCfg(pCfgReq, &WaveFmtExt);
1667	LogRel2(("DSound: Requested %s format for '%s':\n"
1668	"DSound: wFormatTag = %RU16\n"
1669	"DSound: nChannels = %RU16\n"
1670	"DSound: nSamplesPerSec = %RU32\n"
1671	"DSound: nAvgBytesPerSec = %RU32\n"
1672	"DSound: nBlockAlign = %RU16\n"
1673	"DSound: wBitsPerSample = %RU16\n"
1674	"DSound: cbSize = %RU16\n",
1675	pszStreamType, pCfgReq->szName, WaveFmtExt.Format.wFormatTag, WaveFmtExt.Format.nChannels,
1676	WaveFmtExt.Format.nSamplesPerSec, WaveFmtExt.Format.nAvgBytesPerSec, WaveFmtExt.Format.nBlockAlign,
1677	WaveFmtExt.Format.wBitsPerSample, WaveFmtExt.Format.cbSize));
1678	if (WaveFmtExt.Format.cbSize != 0)
1679	LogRel2(("DSound: dwChannelMask = %#RX32\n"
1680	"DSound: wValidBitsPerSample = %RU16\n",
1681	WaveFmtExt.dwChannelMask, WaveFmtExt.Samples.wValidBitsPerSample));
1682
1683	HRESULT hrc;
1684	if (pCfgReq->enmDir == PDMAUDIODIR_IN)
1685	hrc = drvHostDSoundStreamCreateCapture(pThis, pStreamDS, pCfgReq, pCfgAcq, &WaveFmtExt);
1686	else
1687	hrc = drvHostDSoundStreamCreatePlayback(pThis, pStreamDS, pCfgReq, pCfgAcq, &WaveFmtExt);
1688	int rc;
1689	if (SUCCEEDED(hrc))
1690	{
1691	LogRel2(("DSound: Acquired %s format for '%s':\n"
1692	"DSound: wFormatTag = %RU16\n"
1693	"DSound: nChannels = %RU16\n"
1694	"DSound: nSamplesPerSec = %RU32\n"
1695	"DSound: nAvgBytesPerSec = %RU32\n"
1696	"DSound: nBlockAlign = %RU16\n"
1697	"DSound: wBitsPerSample = %RU16\n"
1698	"DSound: cbSize = %RU16\n",
1699	pszStreamType, pCfgReq->szName, WaveFmtExt.Format.wFormatTag, WaveFmtExt.Format.nChannels,
1700	WaveFmtExt.Format.nSamplesPerSec, WaveFmtExt.Format.nAvgBytesPerSec, WaveFmtExt.Format.nBlockAlign,
1701	WaveFmtExt.Format.wBitsPerSample, WaveFmtExt.Format.cbSize));
1702	if (WaveFmtExt.Format.cbSize != 0)
1703	{
1704	LogRel2(("DSound: dwChannelMask = %#RX32\n"
1705	"DSound: wValidBitsPerSample = %RU16\n",
1706	WaveFmtExt.dwChannelMask, WaveFmtExt.Samples.wValidBitsPerSample));
1707
1708	/* Update the channel count and map here. */
1709	PDMAudioPropsSetChannels(&pCfgAcq->Props, WaveFmtExt.Format.nChannels);
1710	uint8_t idCh = 0;
1711	for (unsigned iBit = 0; iBit < 32 && idCh < WaveFmtExt.Format.nChannels; iBit++)
1712	if (WaveFmtExt.dwChannelMask & RT_BIT_32(iBit))
1713	{
1714	pCfgAcq->Props.aidChannels[idCh] = (unsigned)PDMAUDIOCHANNELID_FIRST_STANDARD + iBit;
1715	idCh++;
1716	}
1717	Assert(idCh == WaveFmtExt.Format.nChannels);
1718	}
1719
1720	/*
1721	* Copy the acquired config and reset the stream (clears the buffer).
1722	*/
1723	PDMAudioStrmCfgCopy(&pStreamDS->Cfg, pCfgAcq);
1724	drvHostDSoundStreamReset(pThis, pStreamDS);
1725
1726	RTCritSectEnter(&pThis->CritSect);
1727	RTListAppend(&pThis->HeadStreams, &pStreamDS->ListEntry);
1728	RTCritSectLeave(&pThis->CritSect);
1729
1730	rc = VINF_SUCCESS;
1731	}
1732	else
1733	rc = VERR_AUDIO_STREAM_COULD_NOT_CREATE;
1734
1735	LogFlowFunc(("returns %Rrc\n", rc));
1736	return rc;
1737	}
1738
1739
1740	/**
1741	* @interface_method_impl{PDMIHOSTAUDIO,pfnStreamDestroy}
1742	*/
1743	static DECLCALLBACK(int) drvHostDSoundHA_StreamDestroy(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDSTREAM pStream,
1744	bool fImmediate)
1745	{
1746	PDRVHOSTDSOUND pThis = RT_FROM_MEMBER(pInterface, DRVHOSTDSOUND, IHostAudio);
1747	PDSOUNDSTREAM pStreamDS = (PDSOUNDSTREAM)pStream;
1748	AssertPtrReturn(pStreamDS, VERR_INVALID_POINTER);
1749	LogFlowFunc(("Stream '%s' {%s}\n", pStreamDS->Cfg.szName, drvHostDSoundStreamStatusString(pStreamDS)));
1750	RT_NOREF(fImmediate);
1751
1752	RTCritSectEnter(&pThis->CritSect);
1753	RTListNodeRemove(&pStreamDS->ListEntry);
1754	RTCritSectLeave(&pThis->CritSect);
1755
1756	if (pStreamDS->Cfg.enmDir == PDMAUDIODIR_IN)
1757	{
1758	/*
1759	* Input.
1760	*/
1761	if (pStreamDS->In.pDSCB)
1762	{
1763	HRESULT hrc = IDirectSoundCaptureBuffer_Stop(pStreamDS->In.pDSCB);
1764	if (FAILED(hrc))
1765	LogFunc(("IDirectSoundCaptureBuffer_Stop failed: %Rhrc\n", hrc));
1766
1767	drvHostDSoundStreamReset(pThis, pStreamDS);
1768
1769	IDirectSoundCaptureBuffer8_Release(pStreamDS->In.pDSCB);
1770	pStreamDS->In.pDSCB = NULL;
1771	}
1772	}
1773	else
1774	{
1775	/*
1776	* Output.
1777	*/
1778	if (pStreamDS->Out.pDSB)
1779	{
1780	drvHostDSoundStreamStopPlayback(pThis, pStreamDS, true /fReset/);
1781
1782	IDirectSoundBuffer8_Release(pStreamDS->Out.pDSB);
1783	pStreamDS->Out.pDSB = NULL;
1784	}
1785	}
1786
1787	if (RTCritSectIsInitialized(&pStreamDS->CritSect))
1788	RTCritSectDelete(&pStreamDS->CritSect);
1789
1790	return VINF_SUCCESS;
1791	}
1792
1793
1794	/**
1795	* Worker for drvHostDSoundHA_StreamEnable and drvHostDSoundHA_StreamResume.
1796	*
1797	* This will try re-open the capture device if we're having trouble starting it.
1798	*
1799	* @returns VBox status code.
1800	* @param pThis The DSound host audio driver instance data.
1801	* @param pStreamDS The stream instance data.
1802	*/
1803	static int drvHostDSoundStreamCaptureStart(PDRVHOSTDSOUND pThis, PDSOUNDSTREAM pStreamDS)
1804	{
1805	/*
1806	* Check the stream status first.
1807	*/
1808	int rc = VERR_AUDIO_STREAM_NOT_READY;
1809	if (pStreamDS->In.pDSCB)
1810	{
1811	DWORD fStatus = 0;
1812	HRESULT hrc = IDirectSoundCaptureBuffer8_GetStatus(pStreamDS->In.pDSCB, &fStatus);
1813	if (SUCCEEDED(hrc))
1814	{
1815	/*
1816	* Try start capturing if it's not already doing so.
1817	*/
1818	if (!(fStatus & DSCBSTATUS_CAPTURING))
1819	{
1820	LogRel2(("DSound: Starting capture on '%s' ... \n", pStreamDS->Cfg.szName));
1821	hrc = IDirectSoundCaptureBuffer8_Start(pStreamDS->In.pDSCB, DSCBSTART_LOOPING);
1822	if (SUCCEEDED(hrc))
1823	rc = VINF_SUCCESS;
1824	else
1825	{
1826	/*
1827	* Failed to start, try re-create the capture buffer.
1828	*/
1829	LogRelMax(64, ("DSound: Starting to capture on '%s' failed: %Rhrc - will try re-open it ...\n",
1830	pStreamDS->Cfg.szName, hrc));
1831
1832	IDirectSoundCaptureBuffer8_Release(pStreamDS->In.pDSCB);
1833	pStreamDS->In.pDSCB = NULL;
1834
1835	PDMAUDIOSTREAMCFG CfgReq = pStreamDS->Cfg;
1836	PDMAUDIOSTREAMCFG CfgAcq = pStreamDS->Cfg;
1837	WAVEFORMATEXTENSIBLE WaveFmtExt;
1838	dsoundWaveFmtFromCfg(&pStreamDS->Cfg, &WaveFmtExt);
1839	hrc = drvHostDSoundStreamCreateCapture(pThis, pStreamDS, &CfgReq, &CfgAcq, &WaveFmtExt);
1840	if (SUCCEEDED(hrc))
1841	{
1842	PDMAudioStrmCfgCopy(&pStreamDS->Cfg, &CfgAcq);
1843
1844	/*
1845	* Try starting capture again.
1846	*/
1847	LogRel2(("DSound: Starting capture on re-opened '%s' ... \n", pStreamDS->Cfg.szName));
1848	hrc = IDirectSoundCaptureBuffer8_Start(pStreamDS->In.pDSCB, DSCBSTART_LOOPING);
1849	if (SUCCEEDED(hrc))
1850	rc = VINF_SUCCESS;
1851	else
1852	LogRelMax(64, ("DSound: Starting to capture on re-opened '%s' failed: %Rhrc\n",
1853	pStreamDS->Cfg.szName, hrc));
1854	}
1855	else
1856	LogRelMax(64, ("DSound: Re-opening '%s' failed: %Rhrc\n", pStreamDS->Cfg.szName, hrc));
1857	}
1858	}
1859	else
1860	{
1861	LogRel2(("DSound: Already capturing (%#x)\n", fStatus));
1862	AssertFailed();
1863	}
1864	}
1865	else
1866	LogRelMax(64, ("DSound: Retrieving capture status for '%s' failed: %Rhrc\n", pStreamDS->Cfg.szName, hrc));
1867	}
1868	LogFlowFunc(("returns %Rrc\n", rc));
1869	return rc;
1870	}
1871
1872
1873	/**
1874	* @interface_method_impl{PDMIHOSTAUDIO,pfnStreamEnable}
1875	*/
1876	static DECLCALLBACK(int) drvHostDSoundHA_StreamEnable(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDSTREAM pStream)
1877	{
1878	PDRVHOSTDSOUND pThis = RT_FROM_MEMBER(pInterface, DRVHOSTDSOUND, IHostAudio);
1879	PDSOUNDSTREAM pStreamDS = (PDSOUNDSTREAM)pStream;
1880	LogFlowFunc(("Stream '%s' {%s}\n", pStreamDS->Cfg.szName, drvHostDSoundStreamStatusString(pStreamDS)));
1881
1882	/*
1883	* We always reset the buffer before enabling the stream (normally never necessary).
1884	*/
1885	drvHostDSoundStreamReset(pThis, pStreamDS);
1886	pStreamDS->fEnabled = true;
1887
1888	/*
1889	* Input streams will start capturing, while output streams will only start
1890	* playing once we get some audio data to play.
1891	*/
1892	int rc = VINF_SUCCESS;
1893	if (pStreamDS->Cfg.enmDir == PDMAUDIODIR_IN)
1894	rc = drvHostDSoundStreamCaptureStart(pThis, pStreamDS);
1895	else
1896	Assert(pStreamDS->Cfg.enmDir == PDMAUDIODIR_OUT);
1897
1898	LogFlowFunc(("returns %Rrc\n", rc));
1899	return rc;
1900	}
1901
1902
1903	/**
1904	* Worker for drvHostDSoundHA_StreamDestroy, drvHostDSoundHA_StreamDisable and
1905	* drvHostDSoundHA_StreamPause.
1906	*
1907	* @returns VBox status code.
1908	* @param pThis The DSound host audio driver instance data.
1909	* @param pStreamDS The stream instance data.
1910	* @param fReset Whether to reset the buffer and state.
1911	*/
1912	static int drvHostDSoundStreamStopPlayback(PDRVHOSTDSOUND pThis, PDSOUNDSTREAM pStreamDS, bool fReset)
1913	{
1914	if (!pStreamDS->Out.pDSB)
1915	return VINF_SUCCESS;
1916
1917	LogRel2(("DSound: Stopping playback of '%s'...\n", pStreamDS->Cfg.szName));
1918	HRESULT hrc = IDirectSoundBuffer8_Stop(pStreamDS->Out.pDSB);
1919	if (FAILED(hrc))
1920	{
1921	LogFunc(("IDirectSoundBuffer8_Stop -> %Rhrc; will attempt restoring the stream...\n", hrc));
1922	directSoundPlayRestore(pThis, pStreamDS->Out.pDSB);
1923	hrc = IDirectSoundBuffer8_Stop(pStreamDS->Out.pDSB);
1924	if (FAILED(hrc))
1925	LogRelMax(64, ("DSound: %s playback of '%s' failed: %Rhrc\n", fReset ? "Stopping" : "Pausing",
1926	pStreamDS->Cfg.szName, hrc));
1927	}
1928	LogRel2(("DSound: Stopped playback of '%s': %Rhrc\n", pStreamDS->Cfg.szName, hrc));
1929
1930	if (fReset)
1931	drvHostDSoundStreamReset(pThis, pStreamDS);
1932	return SUCCEEDED(hrc) ? VINF_SUCCESS : VERR_AUDIO_STREAM_NOT_READY;
1933	}
1934
1935
1936	/**
1937	* @interface_method_impl{PDMIHOSTAUDIO,pfnStreamDisable}
1938	*/
1939	static DECLCALLBACK(int) drvHostDSoundHA_StreamDisable(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDSTREAM pStream)
1940	{
1941	PDRVHOSTDSOUND pThis = RT_FROM_MEMBER(pInterface, DRVHOSTDSOUND, IHostAudio);
1942	PDSOUNDSTREAM pStreamDS = (PDSOUNDSTREAM)pStream;
1943	LogFlowFunc(("cMsLastTransfer=%RI64 ms, stream '%s' {%s} \n",
1944	pStreamDS->msLastTransfer ? RTTimeMilliTS() - pStreamDS->msLastTransfer : -1,
1945	pStreamDS->Cfg.szName, drvHostDSoundStreamStatusString(pStreamDS) ));
1946
1947	/*
1948	* Change the state.
1949	*/
1950	pStreamDS->fEnabled = false;
1951
1952	/*
1953	* Stop the stream and maybe reset the buffer.
1954	*/
1955	int rc = VINF_SUCCESS;
1956	if (pStreamDS->Cfg.enmDir == PDMAUDIODIR_IN)
1957	{
1958	if (pStreamDS->In.pDSCB)
1959	{
1960	HRESULT hrc = IDirectSoundCaptureBuffer_Stop(pStreamDS->In.pDSCB);
1961	if (SUCCEEDED(hrc))
1962	LogRel3(("DSound: Stopped capture on '%s'.\n", pStreamDS->Cfg.szName));
1963	else
1964	{
1965	LogRelMax(64, ("DSound: Stopping capture on '%s' failed: %Rhrc\n", pStreamDS->Cfg.szName, hrc));
1966	/* Don't report errors up to the caller, as it might just be a capture device change. */
1967	}
1968
1969	/* This isn't strictly speaking necessary since StreamEnable does it too... */
1970	drvHostDSoundStreamReset(pThis, pStreamDS);
1971	}
1972	}
1973	else
1974	{
1975	Assert(pStreamDS->Cfg.enmDir == PDMAUDIODIR_OUT);
1976	if (pStreamDS->Out.pDSB)
1977	{
1978	rc = drvHostDSoundStreamStopPlayback(pThis, pStreamDS, true /fReset/);
1979	if (RT_SUCCESS(rc))
1980	LogRel3(("DSound: Stopped playback on '%s'.\n", pStreamDS->Cfg.szName));
1981	}
1982	}
1983
1984	LogFlowFunc(("returns %Rrc {%s}\n", rc, drvHostDSoundStreamStatusString(pStreamDS)));
1985	return rc;
1986	}
1987
1988
1989	/**
1990	* @interface_method_impl{PDMIHOSTAUDIO,pfnStreamPause}
1991	*
1992	* @note Basically the same as drvHostDSoundHA_StreamDisable, just w/o the
1993	* buffer resetting and fEnabled change.
1994	*/
1995	static DECLCALLBACK(int) drvHostDSoundHA_StreamPause(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDSTREAM pStream)
1996	{
1997	PDRVHOSTDSOUND pThis = RT_FROM_MEMBER(pInterface, DRVHOSTDSOUND, IHostAudio);
1998	PDSOUNDSTREAM pStreamDS = (PDSOUNDSTREAM)pStream;
1999	LogFlowFunc(("cMsLastTransfer=%RI64 ms, stream '%s' {%s} \n",
2000	pStreamDS->msLastTransfer ? RTTimeMilliTS() - pStreamDS->msLastTransfer : -1,
2001	pStreamDS->Cfg.szName, drvHostDSoundStreamStatusString(pStreamDS) ));
2002
2003	/*
2004	* Stop the stream and maybe reset the buffer.
2005	*/
2006	int rc = VINF_SUCCESS;
2007	if (pStreamDS->Cfg.enmDir == PDMAUDIODIR_IN)
2008	{
2009	if (pStreamDS->In.pDSCB)
2010	{
2011	HRESULT hrc = IDirectSoundCaptureBuffer_Stop(pStreamDS->In.pDSCB);
2012	if (SUCCEEDED(hrc))
2013	LogRel3(("DSound: Stopped capture on '%s'.\n", pStreamDS->Cfg.szName));
2014	else
2015	{
2016	LogRelMax(64, ("DSound: Stopping capture on '%s' failed: %Rhrc\n", pStreamDS->Cfg.szName, hrc));
2017	/* Don't report errors up to the caller, as it might just be a capture device change. */
2018	}
2019	}
2020	}
2021	else
2022	{
2023	Assert(pStreamDS->Cfg.enmDir == PDMAUDIODIR_OUT);
2024	if (pStreamDS->Out.pDSB)
2025	{
2026	/* Don't stop draining buffers, we won't be resuming them right.
2027	They'll stop by themselves anyway. */
2028	if (pStreamDS->Out.fDrain)
2029	LogFunc(("Stream '%s' is draining\n", pStreamDS->Cfg.szName));
2030	else
2031	{
2032	rc = drvHostDSoundStreamStopPlayback(pThis, pStreamDS, false /fReset/);
2033	if (RT_SUCCESS(rc))
2034	LogRel3(("DSound: Stopped playback on '%s'.\n", pStreamDS->Cfg.szName));
2035	}
2036	}
2037	}
2038
2039	LogFlowFunc(("returns %Rrc {%s}\n", rc, drvHostDSoundStreamStatusString(pStreamDS)));
2040	return rc;
2041	}
2042
2043
2044	/**
2045	* Worker for drvHostDSoundHA_StreamResume and drvHostDSoundHA_StreamPlay that
2046	* starts playing the DirectSound Buffer.
2047	*
2048	* @returns VBox status code.
2049	* @param pThis Host audio driver instance.
2050	* @param pStreamDS Stream to start playing.
2051	*/
2052	static int directSoundPlayStart(PDRVHOSTDSOUND pThis, PDSOUNDSTREAM pStreamDS)
2053	{
2054	if (!pStreamDS->Out.pDSB)
2055	return VERR_AUDIO_STREAM_NOT_READY;
2056
2057	LogRel2(("DSound: Starting playback of '%s' ...\n", pStreamDS->Cfg.szName));
2058	HRESULT hrc = IDirectSoundBuffer8_Play(pStreamDS->Out.pDSB, 0, 0, DSCBSTART_LOOPING);
2059	if (SUCCEEDED(hrc))
2060	return VINF_SUCCESS;
2061
2062	for (unsigned i = 0; hrc == DSERR_BUFFERLOST && i < DRV_DSOUND_RESTORE_ATTEMPTS_MAX; i++)
2063	{
2064	LogFunc(("Restarting playback failed due to lost buffer, restoring ...\n"));
2065	directSoundPlayRestore(pThis, pStreamDS->Out.pDSB);
2066
2067	hrc = IDirectSoundBuffer8_Play(pStreamDS->Out.pDSB, 0, 0, DSCBSTART_LOOPING);
2068	if (SUCCEEDED(hrc))
2069	return VINF_SUCCESS;
2070	}
2071
2072	LogRelMax(64, ("DSound: Failed to start playback of '%s': %Rhrc\n", pStreamDS->Cfg.szName, hrc));
2073	return VERR_AUDIO_STREAM_NOT_READY;
2074	}
2075
2076
2077	/**
2078	* @interface_method_impl{PDMIHOSTAUDIO,pfnStreamResume}
2079	*/
2080	static DECLCALLBACK(int) drvHostDSoundHA_StreamResume(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDSTREAM pStream)
2081	{
2082	PDRVHOSTDSOUND pThis = RT_FROM_MEMBER(pInterface, DRVHOSTDSOUND, IHostAudio);
2083	PDSOUNDSTREAM pStreamDS = (PDSOUNDSTREAM)pStream;
2084	LogFlowFunc(("Stream '%s' {%s}\n", pStreamDS->Cfg.szName, drvHostDSoundStreamStatusString(pStreamDS)));
2085
2086	/*
2087	* Input streams will start capturing, while output streams will only start
2088	* playing if we're past the pre-buffering state.
2089	*/
2090	int rc = VINF_SUCCESS;
2091	if (pStreamDS->Cfg.enmDir == PDMAUDIODIR_IN)
2092	rc = drvHostDSoundStreamCaptureStart(pThis, pStreamDS);
2093	else
2094	{
2095	Assert(pStreamDS->Cfg.enmDir == PDMAUDIODIR_OUT);
2096	if (!pStreamDS->Out.fFirstTransfer)
2097	rc = directSoundPlayStart(pThis, pStreamDS);
2098	}
2099
2100	LogFlowFunc(("returns %Rrc {%s}\n", rc, drvHostDSoundStreamStatusString(pStreamDS)));
2101	return rc;
2102	}
2103
2104
2105	/**
2106	* @interface_method_impl{PDMIHOSTAUDIO,pfnStreamDrain}
2107	*/
2108	static DECLCALLBACK(int) drvHostDSoundHA_StreamDrain(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDSTREAM pStream)
2109	{
2110	PDRVHOSTDSOUND pThis = RT_FROM_MEMBER(pInterface, DRVHOSTDSOUND, IHostAudio);
2111	PDSOUNDSTREAM pStreamDS = (PDSOUNDSTREAM)pStream;
2112	AssertReturn(pStreamDS->Cfg.enmDir == PDMAUDIODIR_OUT, VERR_INVALID_PARAMETER);
2113	LogFlowFunc(("cMsLastTransfer=%RI64 ms, stream '%s' {%s} \n",
2114	pStreamDS->msLastTransfer ? RTTimeMilliTS() - pStreamDS->msLastTransfer : -1,
2115	pStreamDS->Cfg.szName, drvHostDSoundStreamStatusString(pStreamDS) ));
2116
2117	/*
2118	* We've started the buffer in looping mode, try switch to non-looping...
2119	*/
2120	int rc = VINF_SUCCESS;
2121	if (pStreamDS->Out.pDSB && !pStreamDS->Out.fDrain)
2122	{
2123	LogRel2(("DSound: Switching playback stream '%s' to drain mode...\n", pStreamDS->Cfg.szName));
2124	HRESULT hrc = IDirectSoundBuffer8_Stop(pStreamDS->Out.pDSB);
2125	if (SUCCEEDED(hrc))
2126	{
2127	hrc = IDirectSoundBuffer8_Play(pStreamDS->Out.pDSB, 0, 0, 0);
2128	if (SUCCEEDED(hrc))
2129	{
2130	uint64_t const msNow = RTTimeMilliTS();
2131	pStreamDS->Out.msDrainDeadline = PDMAudioPropsBytesToMilli(&pStreamDS->Cfg.Props, pStreamDS->cbBufSize) + msNow;
2132	pStreamDS->Out.fDrain = true;
2133	}
2134	else
2135	LogRelMax(64, ("DSound: Failed to restart '%s' in drain mode: %Rhrc\n", pStreamDS->Cfg.szName, hrc));
2136	}
2137	else
2138	{
2139	Log2Func(("drain: IDirectSoundBuffer8_Stop failed: %Rhrc\n", hrc));
2140	directSoundPlayRestore(pThis, pStreamDS->Out.pDSB);
2141
2142	HRESULT hrc2 = IDirectSoundBuffer8_Stop(pStreamDS->Out.pDSB);
2143	if (SUCCEEDED(hrc2))
2144	LogFunc(("Successfully stopped the stream after restoring it. (hrc=%Rhrc)\n", hrc));
2145	else
2146	{
2147	LogRelMax(64, ("DSound: Failed to stop playback stream '%s' for putting into drain mode: %Rhrc (initial), %Rhrc (after restore)\n",
2148	pStreamDS->Cfg.szName, hrc, hrc2));
2149	rc = VERR_AUDIO_STREAM_NOT_READY;
2150	}
2151	}
2152	}
2153	LogFlowFunc(("returns %Rrc {%s}\n", rc, drvHostDSoundStreamStatusString(pStreamDS)));
2154	return rc;
2155	}
2156
2157
2158	/**
2159	* Retrieves the number of free bytes available for writing to a DirectSound output stream.
2160	*
2161	* @return VBox status code. VERR_NOT_AVAILABLE if unable to determine or the
2162	* buffer was not recoverable.
2163	* @param pThis Host audio driver instance.
2164	* @param pStreamDS DirectSound output stream to retrieve number for.
2165	* @param pdwFree Where to return the free amount on success.
2166	* @param poffPlayCursor Where to return the play cursor offset.
2167	*/
2168	static int dsoundGetFreeOut(PDRVHOSTDSOUND pThis, PDSOUNDSTREAM pStreamDS, DWORD pdwFree, DWORD poffPlayCursor)
2169	{
2170	AssertPtrReturn(pThis, VERR_INVALID_POINTER);
2171	AssertPtrReturn(pStreamDS, VERR_INVALID_POINTER);
2172	AssertPtrReturn(pdwFree, VERR_INVALID_POINTER);
2173	AssertPtr(poffPlayCursor);
2174
2175	Assert(pStreamDS->Cfg.enmDir == PDMAUDIODIR_OUT); /* Paranoia. */
2176
2177	LPDIRECTSOUNDBUFFER8 pDSB = pStreamDS->Out.pDSB;
2178	AssertPtrReturn(pDSB, VERR_INVALID_POINTER);
2179
2180	HRESULT hr = S_OK;
2181
2182	/* Get the current play position which is used for calculating the free space in the buffer. */
2183	for (unsigned i = 0; i < DRV_DSOUND_RESTORE_ATTEMPTS_MAX; i++)
2184	{
2185	DWORD offPlayCursor = 0;
2186	DWORD offWriteCursor = 0;
2187	hr = IDirectSoundBuffer8_GetCurrentPosition(pDSB, &offPlayCursor, &offWriteCursor);
2188	if (SUCCEEDED(hr))
2189	{
2190	int32_t cbDiff = offWriteCursor - offPlayCursor;
2191	if (cbDiff < 0)
2192	cbDiff += pStreamDS->cbBufSize;
2193
2194	int32_t cbFree = offPlayCursor - pStreamDS->Out.offWritePos;
2195	if (cbFree < 0)
2196	cbFree += pStreamDS->cbBufSize;
2197
2198	if (cbFree > (int32_t)pStreamDS->cbBufSize - cbDiff)
2199	{
2200	/** @todo count/log these. */
2201	pStreamDS->Out.offWritePos = offWriteCursor;
2202	cbFree = pStreamDS->cbBufSize - cbDiff;
2203	}
2204
2205	/* When starting to use a DirectSound buffer, offPlayCursor and offWriteCursor
2206	* both point at position 0, so we won't be able to detect how many bytes
2207	* are writable that way.
2208	*
2209	* So use our per-stream written indicator to see if we just started a stream. */
2210	if (pStreamDS->Out.cbWritten == 0)
2211	cbFree = pStreamDS->cbBufSize;
2212
2213	LogRel4(("DSound: offPlayCursor=%RU32, offWriteCursor=%RU32, offWritePos=%RU32 -> cbFree=%RI32\n",
2214	offPlayCursor, offWriteCursor, pStreamDS->Out.offWritePos, cbFree));
2215
2216	*pdwFree = cbFree;
2217	*poffPlayCursor = offPlayCursor;
2218	return VINF_SUCCESS;
2219	}
2220
2221	if (hr != DSERR_BUFFERLOST) /** @todo MSDN doesn't state this error for GetCurrentPosition(). */
2222	break;
2223
2224	LogFunc(("Getting playing position failed due to lost buffer, restoring ...\n"));
2225
2226	directSoundPlayRestore(pThis, pDSB);
2227	}
2228
2229	if (hr != DSERR_BUFFERLOST) /* Avoid log flooding if the error is still there. */
2230	DSLOGREL(("DSound: Getting current playback position failed with %Rhrc\n", hr));
2231
2232	LogFunc(("Failed with %Rhrc\n", hr));
2233
2234	*poffPlayCursor = pStreamDS->cbBufSize;
2235	return VERR_NOT_AVAILABLE;
2236	}
2237
2238
2239	/**
2240	* @interface_method_impl{PDMIHOSTAUDIO,pfnStreamGetState}
2241	*/
2242	static DECLCALLBACK(PDMHOSTAUDIOSTREAMSTATE) drvHostDSoundHA_StreamGetState(PPDMIHOSTAUDIO pInterface,
2243	PPDMAUDIOBACKENDSTREAM pStream)
2244	{
2245	RT_NOREF(pInterface);
2246	PDSOUNDSTREAM pStreamDS = (PDSOUNDSTREAM)pStream;
2247	AssertPtrReturn(pStreamDS, PDMHOSTAUDIOSTREAMSTATE_INVALID);
2248
2249	if ( pStreamDS->Cfg.enmDir != PDMAUDIODIR_OUT
2250	\|\| !pStreamDS->Out.fDrain)
2251	{
2252	LogFlowFunc(("returns OKAY for '%s' {%s}\n", pStreamDS->Cfg.szName, drvHostDSoundStreamStatusString(pStreamDS)));
2253	return PDMHOSTAUDIOSTREAMSTATE_OKAY;
2254	}
2255	LogFlowFunc(("returns DRAINING for '%s' {%s}\n", pStreamDS->Cfg.szName, drvHostDSoundStreamStatusString(pStreamDS)));
2256	return PDMHOSTAUDIOSTREAMSTATE_DRAINING;
2257	}
2258
2259	#if 0 /* This isn't working as the write cursor is more a function of time than what we do.
2260	Previously we only reported the pre-buffering status anyway, so no harm. */
2261	/**
2262	* @interface_method_impl{PDMIHOSTAUDIO,pfnStreamGetPending}
2263	*/
2264	static DECLCALLBACK(uint32_t) drvHostDSoundHA_StreamGetPending(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDSTREAM pStream)
2265	{
2266	/PDRVHOSTDSOUND pThis = RT_FROM_MEMBER(pInterface, DRVHOSTDSOUND, IHostAudio); / RT_NOREF(pInterface);
2267	PDSOUNDSTREAM pStreamDS = (PDSOUNDSTREAM)pStream;
2268	AssertPtrReturn(pStreamDS, 0);
2269	LogFlowFunc(("Stream '%s' {%s}\n", pStreamDS->Cfg.szName, drvHostDSoundStreamStatusString(pStreamDS)));
2270
2271	if (pStreamDS->Cfg.enmDir == PDMAUDIODIR_OUT)
2272	{
2273	/* This is a similar calculation as for StreamGetReadable, only for an output buffer. */
2274	AssertPtr(pStreamDS->In.pDSCB);
2275	DWORD offPlayCursor = 0;
2276	DWORD offWriteCursor = 0;
2277	HRESULT hrc = IDirectSoundBuffer8_GetCurrentPosition(pStreamDS->Out.pDSB, &offPlayCursor, &offWriteCursor);
2278	if (SUCCEEDED(hrc))
2279	{
2280	uint32_t cbPending = dsoundRingDistance(offWriteCursor, offPlayCursor, pStreamDS->cbBufSize);
2281	Log3Func(("cbPending=%RU32\n", cbPending));
2282	return cbPending;
2283	}
2284	AssertMsgFailed(("hrc=%Rhrc\n", hrc));
2285	}
2286	/* else: For input streams we never have any pending data. */
2287
2288	return 0;
2289	}
2290	#endif
2291
2292	/**
2293	* @interface_method_impl{PDMIHOSTAUDIO,pfnStreamGetWritable}
2294	*/
2295	static DECLCALLBACK(uint32_t) drvHostDSoundHA_StreamGetWritable(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDSTREAM pStream)
2296	{
2297	PDRVHOSTDSOUND pThis = RT_FROM_MEMBER(pInterface, DRVHOSTDSOUND, IHostAudio);
2298	PDSOUNDSTREAM pStreamDS = (PDSOUNDSTREAM)pStream;
2299	AssertPtrReturn(pStreamDS, 0);
2300	LogFlowFunc(("Stream '%s' {%s}\n", pStreamDS->Cfg.szName, drvHostDSoundStreamStatusString(pStreamDS)));
2301
2302	DWORD cbFree = 0;
2303	DWORD offIgn = 0;
2304	int rc = dsoundGetFreeOut(pThis, pStreamDS, &cbFree, &offIgn);
2305	AssertRCReturn(rc, 0);
2306
2307	return cbFree;
2308	}
2309
2310
2311	/**
2312	* @interface_method_impl{PDMIHOSTAUDIO,pfnStreamPlay}
2313	*/
2314	static DECLCALLBACK(int) drvHostDSoundHA_StreamPlay(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDSTREAM pStream,
2315	const void pvBuf, uint32_t cbBuf, uint32_t pcbWritten)
2316	{
2317	PDRVHOSTDSOUND pThis = RT_FROM_MEMBER(pInterface, DRVHOSTDSOUND, IHostAudio);
2318	PDSOUNDSTREAM pStreamDS = (PDSOUNDSTREAM)pStream;
2319	AssertPtrReturn(pStreamDS, 0);
2320	if (cbBuf)
2321	AssertPtrReturn(pvBuf, VERR_INVALID_POINTER);
2322	AssertPtrReturn(pcbWritten, VERR_INVALID_POINTER);
2323
2324	if (pStreamDS->fEnabled)
2325	AssertReturn(pStreamDS->cbBufSize, VERR_INTERNAL_ERROR_2);
2326	else
2327	{
2328	Log2Func(("Skipping disabled stream {%s}\n", drvHostDSoundStreamStatusString(pStreamDS)));
2329	return VINF_SUCCESS;
2330	}
2331	Log4Func(("cbBuf=%#x stream '%s' {%s}\n", cbBuf, pStreamDS->Cfg.szName, drvHostDSoundStreamStatusString(pStreamDS) ));
2332
2333	/*
2334	* Transfer loop.
2335	*/
2336	uint32_t cbWritten = 0;
2337	while (cbBuf > 0)
2338	{
2339	/*
2340	* Figure out how much we can possibly write.
2341	*/
2342	DWORD offPlayCursor = 0;
2343	DWORD cbWritable = 0;
2344	int rc = dsoundGetFreeOut(pThis, pStreamDS, &cbWritable, &offPlayCursor);
2345	AssertRCReturn(rc, rc);
2346	if (cbWritable < pStreamDS->Cfg.Props.cbFrame)
2347	break;
2348
2349	uint32_t const cbToWrite = RT_MIN(cbWritable, cbBuf);
2350	Log3Func(("offPlay=%#x offWritePos=%#x -> cbWritable=%#x cbToWrite=%#x {%s}\n", offPlayCursor, pStreamDS->Out.offWritePos,
2351	cbWritable, cbToWrite, drvHostDSoundStreamStatusString(pStreamDS) ));
2352
2353	/*
2354	* Lock that amount of buffer.
2355	*/
2356	PVOID pv1 = NULL;
2357	DWORD cb1 = 0;
2358	PVOID pv2 = NULL;
2359	DWORD cb2 = 0;
2360	HRESULT hrc = directSoundPlayLock(pThis, pStreamDS, pStreamDS->Out.offWritePos, cbToWrite,
2361	&pv1, &pv2, &cb1, &cb2, 0 /dwFlags/);
2362	AssertMsgReturn(SUCCEEDED(hrc), ("%Rhrc\n", hrc), VERR_ACCESS_DENIED); /** @todo translate these status codes already! */
2363	//AssertMsg(cb1 + cb2 == cbToWrite, ("%#x + %#x vs %#x\n", cb1, cb2, cbToWrite));
2364
2365	/*
2366	* Copy over the data.
2367	*/
2368	memcpy(pv1, pvBuf, cb1);
2369	pvBuf = (uint8_t *)pvBuf + cb1;
2370	cbBuf -= cb1;
2371	cbWritten += cb1;
2372
2373	if (pv2)
2374	{
2375	memcpy(pv2, pvBuf, cb2);
2376	pvBuf = (uint8_t *)pvBuf + cb2;
2377	cbBuf -= cb2;
2378	cbWritten += cb2;
2379	}
2380
2381	/*
2382	* Unlock and update the write position.
2383	*/
2384	directSoundPlayUnlock(pThis, pStreamDS->Out.pDSB, pv1, pv2, cb1, cb2); /** @todo r=bird: pThis + pDSB parameters here for Unlock, but only pThis for Lock. Why? */
2385	pStreamDS->Out.offWritePos = (pStreamDS->Out.offWritePos + cb1 + cb2) % pStreamDS->cbBufSize;
2386
2387	/*
2388	* If this was the first chunk, kick off playing.
2389	*/
2390	if (!pStreamDS->Out.fFirstTransfer)
2391	{ /* likely */ }
2392	else
2393	{
2394	*pcbWritten = cbWritten;
2395	rc = directSoundPlayStart(pThis, pStreamDS);
2396	AssertRCReturn(rc, rc);
2397	pStreamDS->Out.fFirstTransfer = false;
2398	}
2399	}
2400
2401	/*
2402	* Done.
2403	*/
2404	*pcbWritten = cbWritten;
2405
2406	pStreamDS->Out.cbTransferred += cbWritten;
2407	if (cbWritten)
2408	{
2409	uint64_t const msPrev = pStreamDS->msLastTransfer; RT_NOREF(msPrev);
2410	pStreamDS->Out.cbLastTransferred = cbWritten;
2411	pStreamDS->msLastTransfer = RTTimeMilliTS();
2412	LogFlowFunc(("cbLastTransferred=%RU32, msLastTransfer=%RU64 msNow=%RU64 cMsDelta=%RU64 {%s}\n",
2413	cbWritten, msPrev, pStreamDS->msLastTransfer, msPrev ? pStreamDS->msLastTransfer - msPrev : 0,
2414	drvHostDSoundStreamStatusString(pStreamDS) ));
2415	}
2416	else if ( pStreamDS->Out.fDrain
2417	&& RTTimeMilliTS() >= pStreamDS->Out.msDrainDeadline)
2418	{
2419	LogRel2(("DSound: Stopping draining of '%s' {%s} ...\n", pStreamDS->Cfg.szName, drvHostDSoundStreamStatusString(pStreamDS)));
2420	if (pStreamDS->Out.pDSB)
2421	{
2422	HRESULT hrc = IDirectSoundBuffer8_Stop(pStreamDS->Out.pDSB);
2423	if (FAILED(hrc))
2424	LogRelMax(64, ("DSound: Failed to stop draining stream '%s': %Rhrc\n", pStreamDS->Cfg.szName, hrc));
2425	}
2426	pStreamDS->Out.fDrain = false;
2427	pStreamDS->fEnabled = false;
2428	}
2429
2430	return VINF_SUCCESS;
2431	}
2432
2433
2434	/**
2435	* @interface_method_impl{PDMIHOSTAUDIO,pfnStreamGetReadable}
2436	*/
2437	static DECLCALLBACK(uint32_t) drvHostDSoundHA_StreamGetReadable(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDSTREAM pStream)
2438	{
2439	/PDRVHOSTDSOUND pThis = RT_FROM_MEMBER(pInterface, DRVHOSTDSOUND, IHostAudio); / RT_NOREF(pInterface);
2440	PDSOUNDSTREAM pStreamDS = (PDSOUNDSTREAM)pStream;
2441	AssertPtrReturn(pStreamDS, 0);
2442	Assert(pStreamDS->Cfg.enmDir == PDMAUDIODIR_IN);
2443
2444	if (pStreamDS->fEnabled)
2445	{
2446	/* This is the same calculation as for StreamGetPending. */
2447	AssertPtr(pStreamDS->In.pDSCB);
2448	DWORD offCaptureCursor = 0;
2449	DWORD offReadCursor = 0;
2450	HRESULT hrc = IDirectSoundCaptureBuffer_GetCurrentPosition(pStreamDS->In.pDSCB, &offCaptureCursor, &offReadCursor);
2451	if (SUCCEEDED(hrc))
2452	{
2453	uint32_t cbPending = dsoundRingDistance(offCaptureCursor, offReadCursor, pStreamDS->cbBufSize);
2454	Log3Func(("cbPending=%RU32\n", cbPending));
2455	return cbPending;
2456	}
2457	AssertMsgFailed(("hrc=%Rhrc\n", hrc));
2458	}
2459
2460	return 0;
2461	}
2462
2463
2464	/**
2465	* @interface_method_impl{PDMIHOSTAUDIO,pfnStreamCapture}
2466	*/
2467	static DECLCALLBACK(int) drvHostDSoundHA_StreamCapture(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDSTREAM pStream,
2468	void pvBuf, uint32_t cbBuf, uint32_t pcbRead)
2469	{
2470	/PDRVHOSTDSOUND pThis = RT_FROM_MEMBER(pInterface, DRVHOSTDSOUND, IHostAudio);/ RT_NOREF(pInterface);
2471	PDSOUNDSTREAM pStreamDS = (PDSOUNDSTREAM)pStream;
2472	AssertPtrReturn(pStreamDS, 0);
2473	AssertPtrReturn(pvBuf, VERR_INVALID_POINTER);
2474	AssertReturn(cbBuf, VERR_INVALID_PARAMETER);
2475	AssertPtrReturn(pcbRead, VERR_INVALID_POINTER);
2476
2477	#if 0 /** @todo r=bird: shouldn't we do the same check as for output streams? */
2478	if (pStreamDS->fEnabled)
2479	AssertReturn(pStreamDS->cbBufSize, VERR_INTERNAL_ERROR_2);
2480	else
2481	{
2482	Log2Func(("Stream disabled, skipping\n"));
2483	return VINF_SUCCESS;
2484	}
2485	#endif
2486	Log4Func(("cbBuf=%#x stream '%s' {%s}\n", cbBuf, pStreamDS->Cfg.szName, drvHostDSoundStreamStatusString(pStreamDS) ));
2487
2488	/*
2489	* Read loop.
2490	*/
2491	uint32_t cbRead = 0;
2492	while (cbBuf > 0)
2493	{
2494	/*
2495	* Figure out how much we can read.
2496	*/
2497	DWORD offCaptureCursor = 0;
2498	DWORD offReadCursor = 0;
2499	HRESULT hrc = IDirectSoundCaptureBuffer_GetCurrentPosition(pStreamDS->In.pDSCB, &offCaptureCursor, &offReadCursor);
2500	AssertMsgReturn(SUCCEEDED(hrc), ("%Rhrc\n", hrc), VERR_ACCESS_DENIED); /** @todo translate these status codes already! */
2501	//AssertMsg(offReadCursor == pStreamDS->In.offReadPos, ("%#x %#x\n", offReadCursor, pStreamDS->In.offReadPos));
2502
2503	uint32_t const cbReadable = dsoundRingDistance(offCaptureCursor, pStreamDS->In.offReadPos, pStreamDS->cbBufSize);
2504
2505	if (cbReadable >= pStreamDS->Cfg.Props.cbFrame)
2506	{ /* likely */ }
2507	else
2508	{
2509	if (cbRead > 0)
2510	{ /* likely */ }
2511	else if (pStreamDS->In.cOverruns < 32)
2512	{
2513	pStreamDS->In.cOverruns++;
2514	DSLOG(("DSound: Warning: Buffer full (size is %zu bytes), skipping to record data (overflow #%RU32)\n",
2515	pStreamDS->cbBufSize, pStreamDS->In.cOverruns));
2516	}
2517	break;
2518	}
2519
2520	uint32_t const cbToRead = RT_MIN(cbReadable, cbBuf);
2521	Log3Func(("offCapture=%#x offRead=%#x/%#x -> cbWritable=%#x cbToWrite=%#x {%s}\n", offCaptureCursor, offReadCursor,
2522	pStreamDS->In.offReadPos, cbReadable, cbToRead, drvHostDSoundStreamStatusString(pStreamDS)));
2523
2524	/*
2525	* Lock that amount of buffer.
2526	*/
2527	PVOID pv1 = NULL;
2528	DWORD cb1 = 0;
2529	PVOID pv2 = NULL;
2530	DWORD cb2 = 0;
2531	hrc = directSoundCaptureLock(pStreamDS, pStreamDS->In.offReadPos, cbToRead, &pv1, &pv2, &cb1, &cb2, 0 /dwFlags/);
2532	AssertMsgReturn(SUCCEEDED(hrc), ("%Rhrc\n", hrc), VERR_ACCESS_DENIED); /** @todo translate these status codes already! */
2533	AssertMsg(cb1 + cb2 == cbToRead, ("%#x + %#x vs %#x\n", cb1, cb2, cbToRead));
2534
2535	/*
2536	* Copy over the data.
2537	*/
2538	memcpy(pvBuf, pv1, cb1);
2539	pvBuf = (uint8_t *)pvBuf + cb1;
2540	cbBuf -= cb1;
2541	cbRead += cb1;
2542
2543	if (pv2)
2544	{
2545	memcpy(pvBuf, pv2, cb2);
2546	pvBuf = (uint8_t *)pvBuf + cb2;
2547	cbBuf -= cb2;
2548	cbRead += cb2;
2549	}
2550
2551	/*
2552	* Unlock and update the write position.
2553	*/
2554	directSoundCaptureUnlock(pStreamDS->In.pDSCB, pv1, pv2, cb1, cb2); /** @todo r=bird: pDSB parameter here for Unlock, but pStreamDS for Lock. Why? */
2555	pStreamDS->In.offReadPos = (pStreamDS->In.offReadPos + cb1 + cb2) % pStreamDS->cbBufSize;
2556	}
2557
2558	/*
2559	* Done.
2560	*/
2561	*pcbRead = cbRead;
2562	if (cbRead)
2563	{
2564	uint64_t const msPrev = pStreamDS->msLastTransfer; RT_NOREF(msPrev);
2565	pStreamDS->msLastTransfer = RTTimeMilliTS();
2566	LogFlowFunc(("cbRead=%RU32, msLastTransfer=%RU64 msNow=%RU64 cMsDelta=%RU64 {%s}\n",
2567	cbRead, msPrev, pStreamDS->msLastTransfer, msPrev ? pStreamDS->msLastTransfer - msPrev : 0,
2568	drvHostDSoundStreamStatusString(pStreamDS) ));
2569	}
2570
2571	return VINF_SUCCESS;
2572	}
2573
2574
2575	/*********************************************************************************************************************************
2576	* PDMDRVINS::IBase Interface *
2577	*********************************************************************************************************************************/
2578
2579	/**
2580	* @callback_method_impl{PDMIBASE,pfnQueryInterface}
2581	*/
2582	static DECLCALLBACK(void ) drvHostDSoundQueryInterface(PPDMIBASE pInterface, const char pszIID)
2583	{
2584	PPDMDRVINS pDrvIns = PDMIBASE_2_PDMDRV(pInterface);
2585	PDRVHOSTDSOUND pThis = PDMINS_2_DATA(pDrvIns, PDRVHOSTDSOUND);
2586
2587	PDMIBASE_RETURN_INTERFACE(pszIID, PDMIBASE, &pDrvIns->IBase);
2588	PDMIBASE_RETURN_INTERFACE(pszIID, PDMIHOSTAUDIO, &pThis->IHostAudio);
2589	return NULL;
2590	}
2591
2592
2593	/*********************************************************************************************************************************
2594	* PDMDRVREG Interface *
2595	*********************************************************************************************************************************/
2596
2597	/**
2598	* @callback_method_impl{FNPDMDRVDESTRUCT, pfnDestruct}
2599	*/
2600	static DECLCALLBACK(void) drvHostDSoundDestruct(PPDMDRVINS pDrvIns)
2601	{
2602	PDRVHOSTDSOUND pThis = PDMINS_2_DATA(pDrvIns, PDRVHOSTDSOUND);
2603	PDMDRV_CHECK_VERSIONS_RETURN_VOID(pDrvIns);
2604
2605	LogFlowFuncEnter();
2606
2607	#ifdef VBOX_WITH_AUDIO_MMNOTIFICATION_CLIENT
2608	if (pThis->m_pNotificationClient)
2609	{
2610	pThis->m_pNotificationClient->Unregister();
2611	pThis->m_pNotificationClient->Release();
2612
2613	pThis->m_pNotificationClient = NULL;
2614	}
2615	#endif
2616
2617	PDMAudioHostEnumDelete(&pThis->DeviceEnum);
2618
2619	int rc2 = RTCritSectDelete(&pThis->CritSect);
2620	AssertRC(rc2);
2621
2622	LogFlowFuncLeave();
2623	}
2624
2625
2626	static LPCGUID dsoundConfigQueryGUID(PPDMDRVINS pDrvIns, PCFGMNODE pCfg, const char pszName, RTUUID pUuid)
2627	{
2628	PCPDMDRVHLPR3 pHlp = pDrvIns->pHlpR3;
2629	LPCGUID pGuid = NULL;
2630
2631	char *pszGuid = NULL;
2632	int rc = pHlp->pfnCFGMQueryStringAlloc(pCfg, pszName, &pszGuid);
2633	if (RT_SUCCESS(rc))
2634	{
2635	rc = RTUuidFromStr(pUuid, pszGuid);
2636	if (RT_SUCCESS(rc))
2637	pGuid = (LPCGUID)pUuid;
2638	else
2639	DSLOGREL(("DSound: Error parsing device GUID for device '%s': %Rrc\n", pszName, rc));
2640
2641	RTStrFree(pszGuid);
2642	}
2643
2644	return pGuid;
2645	}
2646
2647
2648	static void dsoundConfigInit(PDRVHOSTDSOUND pThis, PCFGMNODE pCfg)
2649	{
2650	pThis->Cfg.pGuidPlay = dsoundConfigQueryGUID(pThis->pDrvIns, pCfg, "DeviceGuidOut", &pThis->Cfg.uuidPlay);
2651	pThis->Cfg.pGuidCapture = dsoundConfigQueryGUID(pThis->pDrvIns, pCfg, "DeviceGuidIn", &pThis->Cfg.uuidCapture);
2652
2653	DSLOG(("DSound: Configuration: DeviceGuidOut {%RTuuid}, DeviceGuidIn {%RTuuid}\n",
2654	&pThis->Cfg.uuidPlay,
2655	&pThis->Cfg.uuidCapture));
2656	}
2657
2658
2659	/**
2660	* @callback_method_impl{FNPDMDRVCONSTRUCT,
2661	* Construct a DirectSound Audio driver instance.}
2662	*/
2663	static DECLCALLBACK(int) drvHostDSoundConstruct(PPDMDRVINS pDrvIns, PCFGMNODE pCfg, uint32_t fFlags)
2664	{
2665	PDMDRV_CHECK_VERSIONS_RETURN(pDrvIns);
2666	PDRVHOSTDSOUND pThis = PDMINS_2_DATA(pDrvIns, PDRVHOSTDSOUND);
2667	RT_NOREF(fFlags);
2668	LogRel(("Audio: Initializing DirectSound audio driver\n"));
2669
2670	/*
2671	* Init basic data members and interfaces.
2672	*/
2673	RTListInit(&pThis->HeadStreams);
2674	pThis->pDrvIns = pDrvIns;
2675	/* IBase */
2676	pDrvIns->IBase.pfnQueryInterface = drvHostDSoundQueryInterface;
2677	/* IHostAudio */
2678	pThis->IHostAudio.pfnGetConfig = drvHostDSoundHA_GetConfig;
2679	pThis->IHostAudio.pfnGetDevices = drvHostDSoundHA_GetDevices;
2680	pThis->IHostAudio.pfnSetDevice = NULL;
2681	pThis->IHostAudio.pfnGetStatus = drvHostDSoundHA_GetStatus;
2682	pThis->IHostAudio.pfnDoOnWorkerThread = NULL;
2683	pThis->IHostAudio.pfnStreamConfigHint = NULL;
2684	pThis->IHostAudio.pfnStreamCreate = drvHostDSoundHA_StreamCreate;
2685	pThis->IHostAudio.pfnStreamInitAsync = NULL;
2686	pThis->IHostAudio.pfnStreamDestroy = drvHostDSoundHA_StreamDestroy;
2687	pThis->IHostAudio.pfnStreamNotifyDeviceChanged = NULL;
2688	pThis->IHostAudio.pfnStreamEnable = drvHostDSoundHA_StreamEnable;
2689	pThis->IHostAudio.pfnStreamDisable = drvHostDSoundHA_StreamDisable;
2690	pThis->IHostAudio.pfnStreamPause = drvHostDSoundHA_StreamPause;
2691	pThis->IHostAudio.pfnStreamResume = drvHostDSoundHA_StreamResume;
2692	pThis->IHostAudio.pfnStreamDrain = drvHostDSoundHA_StreamDrain;
2693	pThis->IHostAudio.pfnStreamGetState = drvHostDSoundHA_StreamGetState;
2694	pThis->IHostAudio.pfnStreamGetPending = NULL;
2695	pThis->IHostAudio.pfnStreamGetWritable = drvHostDSoundHA_StreamGetWritable;
2696	pThis->IHostAudio.pfnStreamPlay = drvHostDSoundHA_StreamPlay;
2697	pThis->IHostAudio.pfnStreamGetReadable = drvHostDSoundHA_StreamGetReadable;
2698	pThis->IHostAudio.pfnStreamCapture = drvHostDSoundHA_StreamCapture;
2699
2700	/*
2701	* Init the static parts.
2702	*/
2703	PDMAudioHostEnumInit(&pThis->DeviceEnum);
2704
2705	pThis->fEnabledIn = false;
2706	pThis->fEnabledOut = false;
2707
2708	/*
2709	* Verify that IDirectSound is available.
2710	*/
2711	LPDIRECTSOUND pDirectSound = NULL;
2712	HRESULT hrc = CoCreateInstance(CLSID_DirectSound, NULL, CLSCTX_ALL, IID_IDirectSound, (void **)&pDirectSound);
2713	if (SUCCEEDED(hrc))
2714	IDirectSound_Release(pDirectSound);
2715	else
2716	{
2717	LogRel(("DSound: DirectSound not available: %Rhrc\n", hrc));
2718	return VERR_AUDIO_BACKEND_INIT_FAILED;
2719	}
2720
2721	#ifdef VBOX_WITH_AUDIO_MMNOTIFICATION_CLIENT
2722	/*
2723	* Set up WASAPI device change notifications (Vista+).
2724	*/
2725	if (RTSystemGetNtVersion() >= RTSYSTEM_MAKE_NT_VERSION(6, 0, 0))
2726	{
2727	/* Get the notification interface (from DrvAudio). */
2728	# ifdef VBOX_WITH_AUDIO_CALLBACKS
2729	PPDMIHOSTAUDIOPORT pIHostAudioPort = PDMIBASE_QUERY_INTERFACE(pDrvIns->pUpBase, PDMIHOSTAUDIOPORT);
2730	Assert(pIHostAudioPort);
2731	# else
2732	PPDMIHOSTAUDIOPORT pIHostAudioPort = NULL;
2733	# endif
2734	#ifdef RT_EXCEPTIONS_ENABLED
2735	try
2736	#endif
2737	{
2738	pThis->m_pNotificationClient = new DrvHostAudioDSoundMMNotifClient(pIHostAudioPort,
2739	pThis->Cfg.pGuidCapture == NULL,
2740	pThis->Cfg.pGuidPlay == NULL);
2741	}
2742	#ifdef RT_EXCEPTIONS_ENABLED
2743	catch (std::bad_alloc &)
2744	{
2745	return VERR_NO_MEMORY;
2746	}
2747	#else
2748	AssertReturn(pThis->m_pNotificationClient, VERR_NO_MEMORY);
2749	#endif
2750
2751	hrc = pThis->m_pNotificationClient->Initialize();
2752	if (SUCCEEDED(hrc))
2753	{
2754	hrc = pThis->m_pNotificationClient->Register();
2755	if (SUCCEEDED(hrc))
2756	LogRel2(("DSound: Notification client is enabled (ver %#RX64)\n", RTSystemGetNtVersion()));
2757	else
2758	{
2759	LogRel(("DSound: Notification client registration failed: %Rhrc\n", hrc));
2760	return VERR_AUDIO_BACKEND_INIT_FAILED;
2761	}
2762	}
2763	else
2764	{
2765	LogRel(("DSound: Notification client initialization failed: %Rhrc\n", hrc));
2766	return VERR_AUDIO_BACKEND_INIT_FAILED;
2767	}
2768	}
2769	else
2770	LogRel2(("DSound: Notification client is disabled (ver %#RX64)\n", RTSystemGetNtVersion()));
2771	#endif
2772
2773	/*
2774	* Initialize configuration values and critical section.
2775	*/
2776	dsoundConfigInit(pThis, pCfg);
2777	return RTCritSectInit(&pThis->CritSect);
2778	}
2779
2780
2781	/**
2782	* PDM driver registration.
2783	*/
2784	const PDMDRVREG g_DrvHostDSound =
2785	{
2786	/* u32Version */
2787	PDM_DRVREG_VERSION,
2788	/* szName */
2789	"DSoundAudio",
2790	/* szRCMod */
2791	"",
2792	/* szR0Mod */
2793	"",
2794	/* pszDescription */
2795	"DirectSound Audio host driver",
2796	/* fFlags */
2797	PDM_DRVREG_FLAGS_HOST_BITS_DEFAULT,
2798	/* fClass. */
2799	PDM_DRVREG_CLASS_AUDIO,
2800	/* cMaxInstances */
2801	~0U,
2802	/* cbInstance */
2803	sizeof(DRVHOSTDSOUND),
2804	/* pfnConstruct */
2805	drvHostDSoundConstruct,
2806	/* pfnDestruct */
2807	drvHostDSoundDestruct,
2808	/* pfnRelocate */
2809	NULL,
2810	/* pfnIOCtl */
2811	NULL,
2812	/* pfnPowerOn */
2813	NULL,
2814	/* pfnReset */
2815	NULL,
2816	/* pfnSuspend */
2817	NULL,
2818	/* pfnResume */
2819	NULL,
2820	/* pfnAttach */
2821	NULL,
2822	/* pfnDetach */
2823	NULL,
2824	/* pfnPowerOff */
2825	NULL,
2826	/* pfnSoftReset */
2827	NULL,
2828	/* u32EndVersion */
2829	PDM_DRVREG_VERSION
2830	};

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source: vbox/trunk/src/VBox/Devices/Audio/DrvHostAudioDSound.cpp

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